[1] Univ Penn, Perelman Sch Med, Dept Family Med & Community Hlth, Philadelphia, PA 19104 USA
[2] Univ Penn, Leonard Davis Inst Hlth Econ, Philadelphia, PA 19104 USA
[3] Univ Penn, Ctr Publ Hlth Initiat, Philadelphia, PA 19104 USA
[4] Univ Penn, Ctr Clin Epidemiol & Biostat, Philadelphia, PA 19104 USA
[5] Univ Penn, Penn Med Program LGBT Hlth, Philadelphia, PA 19104 USA
[6] Univ Penn, Perelman Sch Med, Dept Med, Philadelphia, PA 19104 USA