1. EJM Hendriks, PT, PhD, is a physical therapist in private practice, the Klepperheide, Druten, the Netherlands. He is also Senior Researcher and Manager, Program for Development and Implementation of National Clinical Practice Guidelines for the Allied Health Professions, Department of Research and Development, Dutch National Institute of Allied Health Professions (NPi), and Senior Researcher (Hea
2. JJ Kerssens, PhD, is Psychologist and Senior Researcher, Netherlands Institute of Health Services Research (Nivel), Utrecht, the Netherlands
3. J Dekker, PhD, is Clinical Psychologist and Professor in Allied Health Care, Department of Rehabilitation Medicine, Free University (VU) Medical Centre, Amsterdam, the Netherlands
4. RM Nelson, PT, PhD, FAPTA, is Physical Therapist, Professor of Physical Therapy, and Chair, Department of Physical Therapy, Lebanon Valley College, Annville, Pa
5. RAB Oostendorp, PT, MT, PhD, is Physical Therapist, Manual Therapist, and Professor in Allied Health Care Research, Nijmegen University Medical Centre, Centre of Quality of Care Research, Nijmegen, the Netherlands. He is also Director, Dutch National Institute of Allied Health Professions (NPi)
6. J van der Zee, PhD, is Medical Sociologist and Professor in Primary Health Care Research, Department of Medical Sociology, Maastricht University, and Director, Netherlands Institute of Health Services Research (Nivel). Dr Hendriks, Dr Dekker, and Dr van der Zee provided concept/idea/ research design