[1] Moi Univ, Sch Med, Dept Family Med, Eldoret, Kenya
[2] Acad Model Providing Access Healthcare AMPATH, Eldoret, Kenya
[3] Duke NUS Med Sch, Lien Ctr Palliat Care, Singapore, Singapore
[4] Duke Univ, Duke Clin Res Inst, Dept Populat Hlth Sci, Durham, NC USA
[5] Moi Teaching & Referral Hosp, Eldoret, Kenya
[6] Duke Univ, Duke Global Hlth Inst, Durham, NC 27708 USA