[1] Indiana Univ, Sch Nursing, Dept Community & Hlth Syst, Indianapolis, IN USA
[2] Indiana Univ, Regenstrief Inst Inc, Ctr Aging Res, Indianapolis, IN USA
[3] Univ Colorado, Anschutz Med Ctr, Dept Med, Div Geriatr Med, Aurora, CO USA
[4] Univ Calif Los Angeles, Sch Med, Div Gen Internal Med & Hlth Serv Res, Los Angeles, CA USA
[5] Indiana Univ Purdue Univ Indianapolis, Purdue Sch Engn & Technol, Indianapolis, IN USA
[6] Regenstrief Inst Inc, Ctr Hlth Serv Res, Indianapolis, IN USA
[7] Richard L Roudebush VA Med Ctr, Vet Hlth Adm, Hlth Serv Res & Dev Serv CIN 13 416, Ctr Hlth Informat & Commun,Dept Vet Affairs, Indianapolis, IN USA
[8] Univ Calif San Francisco, Sch Med, Div Geriatr, San Francisco, CA USA
[9] Regenstrief Inst Inc, IU Ctr Aging Res, 1101 West 10th St, Indianapolis, IN 46202 USA