*Department of Health Policy and Management, Milken Institute School of Public Health, The George Washington University, Washington, DC

†Department of Population Health Sciences, Duke University School of Medicine

‡Duke Margolis Center for Health Policy, Duke University

§Department of Physical Therapy and Occupational Therapy, Duke Health, Durham NC

∥Department of Biostatistics and Bioinformatics, Milken Institute School of Public Health, The George Washington University, Washington, DC

¶Duke Physical Therapy Sports Medicine at Center for Living, Duke University, Durham

#Department of Health Policy and Management, The University of North Carolina at Chapel Hill, Chapel Hill, NC

**Department of Health and Rehabilitation Sciences, Temple University, Philadelphia, PA

This project was funded by the Kate B. Reynolds Charitable Trust.

The authors declare no conflict of interest.

Correspondence to: Salama S. Freed, PhD, Department of Health Policy and Management, Milken Institute School of Public Health, The George Washington University, 950 New Hampshire Avenue NW, Washington, DC 20052. E-mail: [email protected].

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