[1] Washington Univ, Sch Med, Div Geriatr & Nutr Sci, Dept Med, St Louis, MO 63108 USA
[2] Washington Univ, Sch Med, Program Occupat Therapy, St Louis, MO 63108 USA
[3] Univ Missouri, Sch Social Work, Gerontol Grad Program, St Louis, MO 63108 USA
[4] St Louis Univ, Sch Social Work, St Louis, MO 63108 USA
[5] Washington Univ, Sch Med, Div Biostat, St Louis, MO 63108 USA
[6] Washington Univ, Sch Med, Dept Neurol, St Louis, MO 63108 USA