[1] Penn State Univ, Dept Hlth Policy & Adm, University Pk, PA 16802 USA
[2] Indiana Univ, Richard M Fairbanks Sch Publ Hlth IUPUI, Indianapolis, IN USA
[3] Indiana Univ Sch Med, Dept Med, Div Gen Internal Med & Geriatr, Indianapolis, IN USA
[4] IU Ctr Aging Res, Regenstrief Inst, Indianapolis, IN USA
[5] Penn State Univ, Coll Hlth & Human Dev, Dept Hlth Policy & Adm, 118G Keller Bldg, University Pk, PA 16802 USA