[1] Univ Pittsburgh, Sch Med, Dept Internal Med, Pittsburgh, PA USA
[2] Univ Pittsburgh, Caring Complex Chron Condit Res Ctr, Sch Med, Pittsburgh, PA USA
[3] Univ Michigan Ann Arbor, Ann Arbor, MI USA
[4] Community Hlth & Social Serv CHASS Ctr Inc, Detroit, MI USA
[5] VA Pittsburgh Hlth Care Syst, VA Ctr Hlth Equ Res & Promot, Pittsburgh, PA USA