[1] Johns Hopkins Bloomberg Sch Publ Hlth, Dept Hlth Policy & Management, 624 N Broadway, Baltimore, MD 21205 USA
[2] NIH, Dept Bioeth, Clin Ctr, 10 Ctr Dr,Bldg 10, Bethesda, MD 20892 USA
[3] Johns Hopkins Bloomberg Sch Publ Hlth, Dept Epidemiol, 615 N Wolfe St, Baltimore, MD 21205 USA
[4] Johns Hopkins Bloomberg Sch Publ Hlth, Dept Int Hlth, 615 N Wolfe St, Baltimore, MD 21205 USA
[5] Indiana Univ Hlth, Methodist Hosp, 1701 N Senate Ave, Indianapolis, IN 46202 USA
[6] Johns Hopkins Bloomberg Sch Publ Hlth, Dept Mental Hlth, 624 N Broadway, Baltimore, MD USA
[7] VA Pittsburgh Med Ctr, Ctr Hlth Equ Res & Promot, Pittsburgh, PA 15240 USA
[8] Univ Ottawa, Sch Epidemiol & Publ Hlth, 600 Peter Morand Cr, Ottawa, ON K1G 5Z3, Canada
[9] Johns Hopkins Berman Inst Bioeth, 1809 Ashland Ave, Baltimore, MD 21205 USA
[10] 10 Ctr Dr,MSC 1156,Bldg 10,Room 1C118, Bethesda, MD 20892 USA