1. School of Physical Therapy, Massachusetts College of Pharmacy and Health Sciences, Worcester, MA, USA.
2. Boston University School of Medicine, Boston, MA, USA.
3. Kaiser Permanente Washington Health Research Institute, Department of Epidemiology, University of Washington, Seattle, WA, USA.
4. Department of Family Medicine, Boston University School of Medicine and Boston Medical Center, Boston, MA, USA.
5. Department of Rehabilitation Science, MGH Institute of Health Professions, Boston, MA, USA.
6. Department of Wellness and Preventive Medicine, Cleveland Clinic, Cleveland, OH, USA.