[1] Univ Lagos, Coll Med, Fac Clin Sci, Dept Hematol & Blood Transfus, Lagos, Nigeria
[2] Northwestern Univ, Searle Ctr Adv Learning & Teaching, Evanston, IL USA
[3] Northwestern Univ, Feinberg Sch Med, Inst Global Hlth, Chicago, IL 60611 USA
[4] Univ Lagos, Coll Med, Lagos, Nigeria
[5] Northwestern Univ, Feinberg Sch Med, Div Hosp Med, Dept Med,Sect Palliat Care, Chicago, IL 60611 USA
[6] Jesse Brown VA Med Ctr, Palliat Care Serv, Chicago, IL USA
[7] Univ Ibadan, Coll Med, Dept Anesthesia, Ibadan, Nigeria
[8] Northwestern Univ, Feinberg Sch Med, Div Hosp Med, Dept Med, Chicago, IL 60611 USA
[9] Northwestern Univ, Feinberg Sch Med, Div Hosp Med, Dept Med Educ, Chicago, IL 60611 USA