From the Departments of Medicine (T.A., K.T.) and Clinical Epidemiology and Biostatistics (K.T.), Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.
Julie R. Ingelfinger, M.D., Editor
Address reprint requests to Dr. Thadanipon at the Department of Clinical Epidemiology and Biostatistics, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, 270 Rama VI Rd., Ratchathewi, Bangkok 10400, Thailand, or at [email protected].
No other potential conflict of interest relevant to this article was reported.
Disclosure forms provided by the authors are available with the full text of this article at NEJM.org.