[1] Duke Univ, Dept Psychiat & Behav Sci, Sch Med, Durham, NC USA
[2] Duke Univ Hlth Syst, Duke Canc Inst, Durham, NC USA
[3] Durham VA Hlth Care Syst, Geriatr Res Educ & Clin Ctr GRECC, Durham, NC USA
[4] Duke Univ, Ctr Study Human Aging & Dev, Durham, NC USA
[5] Durham VA Hlth Care Syst, Ctr Innovat Accelerate Discovery & Practice Transf, Durham, NC USA
[6] Duke Univ, Dept Populat Hlth Sci, Med Ctr, Durham, NC USA
[7] Duke Univ, Dept Med, Med Ctr, Durham, NC USA
[8] Univ Pittsburgh, Div Pediat Palliat & Support Care, Sch Med, Pittsburgh, PA USA
[9] Univ Michigan, Palliat Care Program, Div Geriatr & Palliat Med, Ann Arbor, MI USA
[10] LTC Charles S Kettles VA Med Ctr, Geriatr Res Educ & Clin Ctr GRECC, Ann Arbor, MI USA
[11] Duke Univ, Dept Biostat & Bioinformat, Sch Med, Durham, NC USA
[12] Mem Sloan Kettering Canc Ctr, Dept Psychiat & Behav Sci, New York, NY USA
[13] Dept Psychiat & Behav Sci, Div Behav Med & Neurosci, 2400 Pratt St,Off 7044, Durham, NC 27705 USA