[1] Baylor Coll Med, Dept Med, Infect Dis Sect, Houston, TX 77030 USA
[2] Michael E Debakey VA Med Ctr, Houston VA Hlth Serv Res & Dev Ctr Excellence, Houston, TX USA
[3] Massachusetts Gen Hosp, Boston, MA 02114 USA
[4] Harvard Univ, Sch Med, Boston, MA USA
[5] Internal Med Associates, Boston, MA USA
[6] Brigham & Womens Hosp, Dept Med, Div Social Med & Hlth Inequal, Boston, MA 02115 USA
[7] Brigham Internal Med Associates, Boston, MA USA
[8] Harvard Univ, Sch Publ Hlth, Dept Soc Human Dev & Hlth, Boston, MA 02115 USA
[9] Dana Farber Canc Inst, Boston, MA 02115 USA