5/11/2015 Setting the stage… The CCCs of Clinical Supervision in SpeechLanguage Pathology: Complexities, Challenges, Competencies Presentation: Sacred Heart University May 19, 2015 Susan EM Bartlett, MA, CCC-SLP • Supervision takes on a different look depending on the circumstances: – Academic training programs – Externship of off-campus supervision of graduate students – SLP/Assistants – Clinical Fellows (SLP) – Clinical doctoral students in audiology (4th year) – Colleagues/peers who are credentialed Bartlett, 2015 Bartlett, 2015 Today… Agenda for presentation • Begin to build a foundation of understanding, i.e., “gaining knowledge” , the components and elements of supervision of graduate students – Salient features of supervision – Off-campus experiences for supervisors and supervisees – Somewhat generic approach to discussing the “process of supervision” • Incorporate suggestions that will help individuals who are supervising or who plan to toward developing “skills” • Reminiscence (“memories from the corners of our minds”) • Overview/review of the technical aspects that influence, shape, oversee, circumscribe clinical supervision (documents, requirements, standards, etc.), i.e., “complexities” • Enduring modelof supervision: Anderson’s continuum • Identification of obstacles and some possible strategies for managing them, i.e., “challenges” • Planning outcomes, i.e., “competencies” • ROI (Return on investment) Bartlett, 2015 Bartlett, 2015 1 5/11/2015 Learner Outcomes Take-away messages • Gain exposure to pertinent ASHA and other documents and research that relate specifically to the supervision of students in clinical practicum experiences (i.e., “technicalities”); • Describe and apply the seminal model of the continuum of supervision developed by Jean Anderson; • Apply at least one strategy for managing obstacles to effective clinical teaching/learning; and • Summarize the benefits and rewards of the clinical supervisory experience. • Clinical Supervision is a process; it is a component of Clinical Education • “Supervision” is not a synonym for “observation” • Aspiring toward a “win-win” outcome • Clinical educator’s outcomes, gains • Supervisee’s outcomes, gains • • • • Rooted in over 30 years of research “One-size-fits-all” approach does not work Off-site practicum: offering student clinicians EPB at its best! You are not going to create “finished products” – May be working toward “Clinical Fellowship-ready” • Respect is a two-way street; essential to achieving effective interpersonal relationships Bartlett, 2015 Breaking this down… Bartlett, 2015 “Complexities”, i.e.,Technicalities • ASHA Documents “Complexities” • Technicalities that circumscribe the process/practice • Details “Challenges” • Obstacles • Realities – Standards • • • • CAA CFCC Knowledge and Skills for Supervisors (2008 a, b, c) ASHA Code of Ethics (2010) “Competencies” • Acquisition and demonstration of knowledge and skills • Outcomes and rewards Bartlett, 2015 • Clinical Education Guidelines for Audiology Externships (ASHA) Bartlett, 2015 2 5/11/2015 Other pertinent publications • Focus Group Report: Externship Supervision (2007) • CAPCSD “White Paper” (April 2013) • Ad Hoc Committee on Supervision (December 2013) aka Blue Ribbon Panel on Challenges out of the gate! • Program & Site arrangements: – Contracts (part of CAA standard, required by…) – FERPA – Matching students to sites (requirements for preparedness) • Site: – Who can take on the role/responsibility of clinical educator Supervision • Time, qualifications, caseload size/variety/consistency, experience, and (soon) coursework or CE in supervision • Liability • Defining the role of field supervisors Bartlett, 2015 Bartlett, 2015 Family Education Rights & Privacy Act “What does this have to do with supervision of students?” • 1974, amended 2008 Buckley Act • School age: through 18 OR when student enters college/university • Students/families have the right to amend information in a record (specific guidelines) – Change factual information, not grades • Educational record information CANNOT be shared without the student’s permission – May be waived – Certain exceptions exist around safety, legal issues Bartlett, 2015 • Information cannot be given out about: – Student’s grades – Student’s coursework – Anything that is part of her/his educational record: • Files, reports, documents, samples of work, grades, etc. • “What can I tell you?” – Student’s academic standing, anything that is not a part of the record • Be aware: • • • Your written notes are your own; they are not part of the record Keep only what is necessary/pertinent Your written summary becomes part of the academic record Bartlett, 2015 3 5/11/2015 Personal reflections • What was the best thing that you remember about your first clinical practicum assignments? – On-campus clinic – Field site • What was the most unsatisfying aspect of your clinical practicum assignment? • What did you want from your supervisor? • What did you gain as a result of the supervisor/supervisee relationship at the end of the assignment? Bartlett, 2015 Bartlett, 2015 1990: Pannbacker et al “Am I a Good Supervisor?” Similarly Pickering (1990) found • Student clinicians preferred supervisors to: – Be available – Be consistent – Be fair – Be flexible – Provide feedback Bartlett, 2015 Three significant needs stood out in students’ writing about their supervisory experiences. The expressed a desire: 1) To feel support and encouragement from their supervisors; 2) For supervisors to encourage two-way feedback because the student would not feel free to give it otherwise; and 3) To know what is expected. Lack of knowledge about expectations evoked students’ decision not to ask questions for fear of sounding ignorant. Bartlett, 2015 4 5/11/2015 2007 Focus Group: Externship Supervision • Memories of being supervised in a health care placement on the plus side: – “…supported my coursework (i.e., made the abstract concrete” – “solidified my desire to work in a hospital setting following graduation” – “gained information that others have to go to conferences for” Supervisors’ interpersonal skills… and their impact on supervisees’ clinical effectiveness: “…when supervisees perceive high levels of unconditional positive regard, genuineness, empathic understanding, and concreteness, their clinical behaviors change in a positive directions.” (Ghitter, 1987) Bartlett, 2015 ASHA Documents Bartlett, 2015 Standards and Implementation CFCC: Std. V-E • CFCC (Council for Clinical Certification) – 2014 Standards and Implementation Procedures for the Certificate of Clinical Competence in Speech-Language Pathology • CAA (Council of Academic Accreditation) • Code of Ethics • Knowledge and Skills Needed by SpeechLanguage Pathologists Providing Clinical Supervision (2008) Bartlett, 2015 The amount of direct supervision must be commensurate with the student’s knowledge, skills and experience, must not be less than 25% of the student's total contact with each client/patient and must take place periodically throughout the practicum. Implementation: The 25% supervision standard is a minimum requirement and should be adjusted upward whenever the student's level of knowledge, skills, and experience warrants. CAA: 3.5B Clinical supervision is commensurate with the clinical knowledge and skills of each student, and clinical procedures ensure that the welfare of each person served by students is protected, in accord with recognized standards of ethical practice and relevant federal and state regulations. Implementation: The program must have written policies that describe how the manner and amount of supervision are determined and adjusted to reflect the competence of each student and the specific needs of the clients/patients served. 3.6B Clinical education obtained in external placements is governed by agreements between the program and the external facility and is monitored by program faculty. Bartlett, 2015 5 5/11/2015 Web link to document • http://www.asha.org/policy/KS200800294.htm#sthash.t7AC2XLV.dpuf ASHA Documents Specific to Supervision in Speech-Language Pathology • Position statement: American Speech-Language-Hearing Association. (2008). Clinical supervision in speech-language pathology [Position Statement] (Available from www.asha.org/policy) • Technical report: American Speech-Language-Hearing Association. (2008). Clinical supervision in speech-language pathology [Technical Report] • Knowledge and Skills: American Speech-Language-Hearing Association. (2008). Knowledge and skills needed by speech-language pathologists providing clinical supervision [Knowledge and Skills] Bartlett, 2015 Bartlett, 2015 11 Fundamental Components of “Knowledge and Skills” document Knowledge and Skills Needed Cluster into these core areas: – Preparation – Inter-personal – Clinical teaching – Diversity Bartlett, 2015 • I. Preparation for the Supervisory Experience • II. Interpersonal Communication and the SupervisorSupervisee Relationship • III. Development of the Supervisee's Critical Thinking and Problem-Solving Skills • IV. Development of the Supervisee's Clinical Competence in Assessment • V. Development of the Supervisee’s Clinical Competence in Intervention • VI. Supervisory Conferences or Meetings of Clinical Teaching Teams Bartlett, 2015 6 5/11/2015 Knowledge and Skills (cont’d): • VII. Evaluating the Growth of the Supervisee Both as a Clinician and as a Professional • VIII. Diversity (Ability, Race, Ethnicity, Gender, Age, Culture, Language, Class, Experience, and Education) • IX. The Development and Maintenance of Clinical and Supervisory Documentation • X. Ethical, Regulatory, and Legal Requirements • XI. Principles of Mentoring Code of Ethics (2010) Principles and Rules Relating to Supervision • I. D. Individuals shall not misrepresent the credentials of assistants, technicians, support personnel, students, Clinical Fellows, or any others under their supervision, and they shall inform those they serve professionally of the name and professional credentials of persons providing services. • I. G. Individuals who hold the Certificate of Clinical Competence may delegate tasks related to provision of clinical services that require the unique skills, knowledge, and judgment that are within the scope of practice of their profession to students only if those services are appropriately supervised. The responsibility for client welfare remains with the certified individual. Bartlett, 2015 Bartlett, 2015 Ethics in Supervision CAPCSD “White Paper…” (2013) • Situations of potential misconduct can include, but are not limited to: (King, 2003) Asha Leader: – failure to provide a sufficient amount of supervision based on the performance of the supervisee; – failure to educate and monitor the supervisee's protection of patient confidentiality; – failure to verify appropriate competencies before delegating tasks to supervisees; – failure to demonstrate benefit to the patient based on outcomes, and – failure to provide self-assessment tools and opportunities to supervisees. Bartlett, 2015 Recommendations: 1) “The time has come to require formal education in the supervisory process to ensure that supervisors are prepared to assume this demanding, complex and important role in our profession.” 2) “…the required clinical educator training should follow a standard curriculum with primary focus on the supervisory process which can be adapted to meet the needs of supervisees at all levels.” Bartlett, 2015 7 5/11/2015 Recommendations (cont’d): • Training content should be structured around the Knowledge and Skills Needed by Speech-Language Pathologists Providing Clinical Supervision (2008c) described in this document. – Establishing an effective relationship with the supervisee – Utilizing effective communication skills – Structuring learning experiences to facilitate critical thinking and decision-making skills – Using questions to develop clinical reasoning skills – Using objective observation techniques and sharing feedback – Understanding the impact on diversity of supervisory interactions ASHA Ad Hoc Committee (12/13) Areas of training for all persons engaged in supervision (generic): Knowledge: Supervisory process and clinical education • Collaborative models of supervision • Adult learning styles • Teaching techniques (reflective practice, use of questions) • Definition of ‘sor and ‘see roles and responsibilities Bartlett, 2015 Ad Hoc committee (cont’d): Bartlett, 2015 Specific to Student Training Committee (cont’d): • Supervisor will: Skills: •Relationship development (“supportive and trusting”) •Communication skills •Establishing and implementing (supervisory) goals •Analysis •Evaluation •Clinical decisions (ethical dilemmas, apply regulatory guidance) •Performance decisions •Research/ •Evidence-Based Practice Bartlett, 2015 – Connect academic knowledge and clinical procedures – Sequence student’s knowledge and skills development – Facilitate student’s ability to respond to various clinical settings and supervisory expectations – Build professional identity and engagement – Facilitate student’s utilization of information to support clinical decision making and problem solving – Understand the contractual agreement with the sending program and adhere to the requirements (when applicable) Bartlett, 2015 8 5/11/2015 Anderson’s model (1981) • Joint problem solving • Use of objective data collection and analysis • Recognizes the interrelatedness of the clinical process and supervisory process • Dual role of student clinician: supervisee and novice clinician simultaneously • ‘Sors and ‘Sees “must grow and develop and improve their own skills as they participate in the supervisory process” Bartlett, 2015 Evaluation - Feedback Stage • • • • • Supervisor (‘Sor) plays dominant role Less assertive role by Supervisee (‘See) ‘Sor organizes and directs Supervisory style is direct and active Appropriate for clinician with emerging or no experience and/or knowledge • ‘See requires varying amounts of assistance • Goal is to move out of this phase Bartlett, 2015 Bartlett, 2015 Transitional Stage: (Sharing responsibilities) • ‘See gains knowledge and skills (and confidence) • ‘Sor enables ‘See’s participation in problemsolving, decision-making • ‘See increased responsibility for analyzing, modifying and working toward independence • ‘Sor continues to provide feedback but it may be negotiated Bartlett, 2015 9 5/11/2015 Self-Supervision Stage Components of Supervision (Anderson, 1988) • ‘Sees demonstrate competency on a consistent basis Understanding – alters own behavior independently and accurately – may consult with peers Planning Integrating • ‘Sors reinforce independence and use of resources – listens, supports, participates in some problem solving – may continue to collect data Analyzing Observing Bartlett, 2015 Bartlett, 2015 “Challenges” Institutional • Productivity expectations (billable time) • Release time for clinical education responsibilities • Scheduling (patients and practitioners) • Resources • ?? Policies and procedures for accommodating students • Institutional • Interpersonal • Intrapersonal – Student clinician’s – Supervisor’s – Manuals to guide externship experiences for students? Bartlett, 2015 Bartlett, 2015 10 5/11/2015 Site specific challenges • Student’s knowledge-experience gap (skill set) • Time management • Record keeping/documentation (brevity and relevance) • Data: collection, analysis, interpretation, application • Flexibility • Long-term and short-term goal planning • Reading and understanding charts/records (EMR) – Terminology, abbreviations, reporting styles, familiarity with EMR • • • • • • Cont’d: • Devising relevant sequence of intervention goals/activities • Determining functional outcomes with EBP foundation • Site’s expectations for productivity: ‘Sors and ‘Sees • Competency for specialized procedures • Liability issues: More “touch” greater the risks Bartlett, 2015 Bartlett, 2015 Cont’d: Interpersonal Team participation Universal precautions Patient/client etiquette Student’s quest for specialty “hours” Billing Balancing “direct” feedback with student’s developing/emerging/evolving competence (confidence) Bartlett, 2015 • Cultural – Age – Gender, gender identity/gender expression – Religion (beliefs, practices, traditions) – Race or ethnicity – National origin – Sexual orientation • Power status and authority • Generational cohorts Bartlett, 2015 11 5/11/2015 Interpersonal: What is the impact on the experience? Generational Cohorts The Greatest (Silent) Generation Baby Boomers • Cultural: – Intergenerational – Traditional: ethnic, race, religion The Milleniuns – Y and “Z” • Positions of power - Boundaries What affects the learning experience and delivery of services to patients? Can it be changed? Gen X Bartlett, 2015 Bartlett, 2015 Seeking a balance Potential “Slippery Slopes” Effective clinical teaching Effective interpersonal interactions (and level of rapport) • Self-disclosures • Boundary crossings – Accidental • Continuum from “benign” to “harmful” - Blurring the lines • Supervisor as a friend or peer (or “buddy”) Bartlett, 2015 Bartlett, 2015 12 5/11/2015 Power • Supervisors hold the power of: – grading, – signing off on clinical hours, – conducting performance evaluations, and – making promotion decisions. Lack of awareness of the influence of power can result in intimidation and a reluctance on the part of the supervisee to participate actively in the supervisory experience. Interpersonal communication • Reference to technical documents and citation of importance of effective inter-personal communication • Multi-directional – Supervisor and Supervisee (supervisory process) – Supervisee and Supervisor – Supervisee (as clinician) and patient • Inter-generational – Older and “very old” clients • Their “children” who are older (60’s +) • Necessary to have an explicit discussion about what is appropriate communication relative to the cohorts’ characterizations Bartlett, 2015 Bartlett, 2015 Implications for Clinical Instruction and Education Supervisor Technology Support Experiential Learning Guidance Patient/Client/Pupil/Others Hands on Bartlett, 2015 Group Discussion Bartlett, 2015 13 5/11/2015 What the millenium cohort values Direction and Guidance Immediacy Provide structure (rules, priorities, procedures) and consequences. Make expectations clear from the beginning. Be the model. Be a non-judgmental sounding board. Point them toward resources. Be responsive. Set realistic expectations. Help them understand the slow nature of recovery. Shaughnessy, 2009 • • • • • • • • Intrapersonal (Supervisor) How can I do my job AND teach a student to do it without doing twice the work? How do I make time to teach a student how to do all the little things that I do in a day? How can I answer all of the student’s questions with the (crazy!) schedule I have? How do I know what the student knows or needs to know? How do I support the student’s progression to independence (critical thinking and problem solving)? Adapted from: Peterson, Lulai, & DeRuiter, 2012 Bartlett, 2015 Bartlett, 2015 Parallels between client intervention and student “intervention” Preparing for the supervisory experience Assessing level of knowledge & skills Determining strengths & needs Devising goals and outcomes Establishing strategies to accomplish outcomes Assigning responsibilities Collecting data Analyzing Evaluating Bartlett, 2015 • Interview – Selection by the site’s practitioners/administrators – What do you want to learn about the student’s level of readiness to participate in a placement at this site? Prior experiences? – What do you want the student to know about this placement/site? • Inventory – Skills and knowledge – “book knowledge”, experiential knowledge – “What is your comfort level with…?” – “What has your experience been with…?” • Student’s self-evaluation – – – – Strengths Needs (knowledge and skills) Learning strategies Preferences • • Feedback Conferencing Bartlett, 2015 14 5/11/2015 Getting to competence Where on the (Anderson)continuum? • Point on the continuum will affect the approach to changing the behavior – For most, it’s at the “Direct/Active” stage in each new setting • Does the skill/behavior require direct feedback? Indirect feedback? • Student’s self evaluation • Create a list: Identify what needs to be worked on (changed) – – – – • Sending program’s skills/knowledge/outcomes materials Site’s skills/knowledge/outcomes material Supervisee self-evaluation Supervisory feedback (look for patterns, repetition) Categorize– joint process ‘see and ‘sor plan together – Technical, Institutional, Intrapersonal, Interpersonal • Knowedge? Skills? • Prioritize: Choose the top three (identify time period) • Choose the one that will yield the most immediate impact – Consider the amount of time available for working on the behavior/skill – “Generalizability” is key consideration – Determine how much time will be allocated • • • Bartlett, 2015 Bartlett, 2015 Devise an action plan Action plans – “macro” and “micro” Identify the goal: make it measurable Identify a criterion for mastery; acceptable performance level Identify a strategy for determining whether the goal was achieved – Consider external validation • • Identify how (frequency of occurrence, %age, ratings) and what kind of data will be collected, documented Create a timeline, including a scheduled, focused discussion time relative to progress toward the goal – Communication with program liaison (updates, evaluation) • • Essential elements of the clinical process: Documentation Data collection, Assessment plans, Implementation of assessment procedures, Implementation of treatment, Supervisory process, Interpersonal/professional skills, Analysis, interpretation, evaluation • “Micro” plans : – Weekly Contingency plans – If goal is met, what’s next? – If goal is not met, what is next? • • “Macro” plan: Long range planning • Each week • Two week period • Three week period Identify who will do what: – Supervisee’s responsibilities – Supervisor’s responsibilities – Liaison’s responsibilities – Daily • Use of personal journal, notebook Bartlett, 2015 Bartlett, 2015 15 5/11/2015 Clinical “teaching” • Planning • Observation of clinician (‘Sor demonstration) – Model the clinical behavior, implementation of an assessment or treatment activity, data collection, modifications • Phasing in ‘See’s participation; specify ‘Sor’s role - Prompt as necessary - Adjust amount of support, immediacy of feedback Determine ‘See’s readiness to assume responsibility • Independence Bartlett, 2015 Giving feedback Promes (adapted from Berquist & Phillips, 1975) It is … • descriptive rather than evaluative. • specific rather than general. • focused on behavior rather than on the person. • accountable to the needs of both the receiver and the giver . • directed toward behavior that the receiver can do something about. • solicited rather than imposed. • well-timed. • focused on sharing information, rather than giving advice. • considerate of amount of information the receiver can use. • specific to what is said and done, or how, not why. • confirmed to insure clear communication. • validated by others as necessary. • followed by attention to the consequences. • an important step toward authenticity. Bartlett, 2015 Supervisor feedback • • • • • • Written (narratives, check-lists, bullet points) Verbal In the moment (i.e., immediately) and on-site Following a session End of day Weekly Bartlett, 2015 “Letting go” • Timing is planned and negotiated – Increasing independence – Meeting standards for direct observation & supervision • Determining when and how to step back • Fear of failure (both supervisor and supervisee) – Recognizing obstacles – Planning contingencies Bartlett, 2015 16 5/11/2015 Role of the program’s liaison • Maintain contact with the off-campus supervisor – On-site visits when possible, neccesary • Ensure that the standards that steer the supervised experience are met (i.e., CFCC, CAA) – Minimum percentage of direct observation is met – Adjusted upward as necessary • Assist in interpreting the regulations that guide supervisory practices – ASHA – The sending program’s • Assist in the student’s performance review process • Intervene when issues surface (interpersonal, intrapersonal, institutional) that are of concern (to supervisor, to student, to liaison) Research • • • • • • • • • • • • Jean Anderson Elizabeth McCrea Judith Brasseur Stephen and Judy Farmer C. Vicki McCready Ruth Peaper Elizabeth Gavett Barbara Solomon Wren Newman David Shapiro Sandra Ulrich Judith Rassi Bartlett, 2015 Bartlett, 2015 Reference material and resources References (cont’d): (ASHA) Special Interest Group 11: Administration and Supervision American Speech-Language-Hearing Association. ( 2008). Knowledge and skills needed by speechlanguage pathologists providing clinical supervision [Knowledge and Skills]. Available from www.asha.org/policy American Speech-Language-Hearing Association. (2010r). Code of ethics [Ethics]. Available from www.asha.org/policy - http://www.asha.org/Code-of-Ethics/#sthash.XjKoA9GT.dpuf Anderson, J. L. ( 1988). The supervisory process in in speech-language pathology and audiology. Boston, MA: College Hill. Durkin, D. ( 2008). March-April). Youth movement. Communication World, 1– 4 (cited in SchoberPeterson et al) Ghitter, R. (1987). Relationship of interpersonal and background variables to supervisee clinical effectiveness. In S. Farmer (Ed.), Proceedings: Clinical Supervision: A Coming of Age, CUSPSPA, Jekyll Island, GA (June) Bartlett, 2015 Herd, C., Kerins, M., and Matrangola, D. (2012). Generational Spin: How Supervisors View the Millennials, SIG 11 Perspectives on Administration and Supervision, October, Vol. 22, 74-84. doi:10.1044/aas22.3.74 Herd, C. & Moore, R. (2012) Multicultural Issues: Supervisors and Supervisees. SIG 11 Perspectives on Administration and Supervision, March, Vol. 22, 33-39. doi:10.1044/aas22.1.33 King, D. (2003, May 27). Supervision of student clinicians: Modeling ethical practice for future professionals. The ASHA Leader, 8, 26 Lancaster, L. and Stillman, D. (2002). When Generations Collide, New York: Harper Business Levine, A. & Dean, D. (2012). Generation on a Tightrope: A portrait of today’s college student, San Jose: Jossey and Bass McCrea, E. & Brasseur, J. (2003). The supervisory process in speech-language pathology and audiology. Boston: Allyn & Bacon Pfiefer, G, (2012). Attitudes Toward Piercings and Tattoos, American Journal of Nursing. (May) Vol. 112, Issue 5, doi:10.1097/01.NAJ.0000414303.32050.99 Bartlett, 2015 17 5/11/2015 References (cont’d): Pannbacker, M., Middleton, G., & Lass, N. (1993). Am I a good supervisor? That depends on who’s asking! The Supervisors’ Forum, 1, 57 Pickering, M. (1990). Establishing and maintaining an effective working relationship: The first task of supervision. In Clinical Supervision Across Settings: Communication and Collaboration. Rockville, MD: American Speech-LanguageHearing Association Schober-Peterson, D., Lulai, R., & DeRuiter, M. (2012). Supervision: The New Clinical Supervisor: Tools for the Medical Setting. SIG 11 Perspectives on Administration and Supervision, (October) Vol. 22, 85-90. doi:10.1044/aas22.3.85 Shaughnessy, P. (2009). Embracing Generational Diversity, Presentation to CAPCSD, Newport, CA, (April) Smith, L. , Herd, C. and Cohn, T (2009) Constructing and Maintaining Appropriate Boundaries within Clinical Supervision Relationships. SIG 11 Perspectives on Administration and Supervision, March, Vol. 19, 30-35. doi:10.1044/aas19.1.30 Walden, P. & Gordon-Pershey, M. (2013). Applying Adult Experiential Learning Theory to Clinical Supervision: A Practical Guide for Supervisors and Supervisees, SIG 11 Perspectives on Administration and Supervision, Vol. 23, 121-144. doi:10.1044/aas23.3.121 Wilson, D. and Emm, M. (2013). Opportunity for Effective Feedback: A Supervision Tool, SIG 11 Perspectives on Administration and Supervision, April, Vol. 23, 28-46. doi:10.1044/aas23.1.28 Bartlett, 2015 18
© Copyright 2026 Paperzz