[1] Univ Calif Irvine, Sue & Bill Gross Sch Nursing, Irvine, CA 92697 USA
[2] Univ Calif Irvine, Sch Med, Irvine, CA 92697 USA
[3] Univ Calif Irvine, Sch Med, Dept Family Med, Div Geriatr & Gerontol, Irvine, CA 92697 USA
[4] Univ Calif Irvine Hlth, Senior Hlth Ctr, Orange, CA USA