From the Department of Clinical Epidemiology and Health Economics (S.A., H.M., H. Y.), School of Public Health, The University of Tokyo; and Department of Health Policy and Informatics (K.F.), Tokyo Medical and Dental University Graduate School of Medicine, Tokyo, Japan.
Submitted: June 5, 2016, Revised: November 7, 2016, Accepted: November 16, 2016, Published online: January 3, 2017.
Supplemental digital content is available for this article. Direct URL citations appear in the printed text, and links to the digital files are provided in the HTML text of this article on the journal’s Web site (www.jtrauma.com).
Address for reprints: Shotaro Aso, MD, MPH, Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan; email: [email protected].