Preventive Medicine and Biometrics, Uniformed Services University, Bethesda, Maryland (Dr Richard); and Department of Health Policy, School of Public Health and Health Services, the George Washington University, Washington, DC (Drs Ku, Dor, and Shin, Mrs Tan and Rosenbaum).
Correspondence: Leighton Ku, PhD, MPH, Department of Health Policy, School of Public Health and Health Services, George Washington University, 2021 K St NW, Ste 800, Washington, DC 20006 (Leighton.ku@gwumc.edu).
Dr Richard formerly worked at the Department of Health Policy, the George Washington University, Washington, DC, when the study was done.
This project was supported by the Geiger Gibson/RCHN Community Health Foundation Research Collaborative. Also, the authors thank Kate Buchanan, formerly of the George Washington University, for research assistance.
The authors have disclosed that they have no significant relationships with, or financial interest in, any commercial companies pertaining to this article.
