[1] VA Pittsburgh Healthcare Syst, Ctr Hlth Equ Res & Promot, Pittsburgh, PA 15240 USA
[2] Univ Pittsburgh, Dept Med, Div Gen Internal Med, Pittsburgh, PA USA
[3] Univ Pittsburgh, Ctr Res Hlth Care, Pittsburgh, PA USA
[4] Univ Pittsburgh, Grad Sch Publ Hlth, Dept Hlth Policy & Management, Pittsburgh, PA USA
[5] Univ Pittsburgh, Grad Sch Publ Hlth, Dept Epidemiol, Pittsburgh, PA USA
[6] Univ Calif Irvine, Program Nursing Sci, Irvine, CA USA
[7] Univ Pittsburgh, Grad Sch Publ Hlth, Dept Behav & Community Hlth Sci, Pittsburgh, PA USA
[8] Univ Pittsburgh, Dept Commun, Pittsburgh, PA USA