[1] Yale Univ, Sch Med, Robert Wood Johnson Clin Scholars Program, New Haven, CT 06520 USA
[2] Yale Univ, Sch Med, Dept Internal Med, New Haven, CT 06510 USA
[3] Johns Hopkins Bloomberg Sch Publ Hlth, Dept Populat Family & Int Hlth, Baltimore, MD USA
[4] Amer Med Assoc Inst Eth, Chicago, IL USA
[5] Univ Chicago, Sch Med, Dept Internal Med, Chicago, IL 60637 USA
[6] Yale Univ, Sch Publ Hlth, Div Chron Dis Epidemiol, New Haven, CT USA
[7] Natl Med Assoc, Washington, DC USA
[8] Duke Univ, Sch Med, Dept Internal Med, Durham, NC USA
[9] Durham VA Med Ctr, Durham, NC USA
[10] Yale Univ, Sch Publ Hlth, Div Hlth Policy & Adm, New Haven, CT USA