[1] Duke Univ, Med Ctr, Dept Psychiat & Behav Sci, Durham, NC USA
[2] Durham VA Hlth Care Syst, Geriatr Res Educ & Clin Ctr, Durham, NC USA
[3] Duke Univ, Ctr Study Aging & Human Dev, Durham, NC USA
[4] Durham VA Hlth Care Syst, Ctr Innovat Accelerate Discovery & Practice Trans, Durham, NC USA
[5] Duke Univ, Med Ctr, Dept Populat Hlth Sci, Durham, NC USA
[6] Duke Univ, Med Ctr, Dept Med, Geriatr Div, Durham, NC USA
[7] Dept Med, Div Internal Med, Durham, NC USA
[8] Duke Univ, Med Ctr, Dept Biostat & Bioinformat, Durham, NC USA
[9] Duke Univ, Sch Nursing, Med Ctr, Durham, NC USA
[10] Duke Univ, Med Ctr, Dept Psychiat & Behav Sci, 2400 Pratt St, Durham, NC 27710 USA