[1] Univ Ibadan, Coll Med, Univ Coll Hosp, Dept Hematol, Ibadan, Nigeria
[2] Loyola Univ Chicago, Stritch Sch Med, Dept Publ Hlth Sci, Maywood, IL USA
[3] Univ Illinois, Div Hematol & Oncol, Dept Med, 820 South Wood St,MC 712, Chicago, IL 60612 USA
[4] Jesse Brown VA, Chicago, IL USA
[5] Univ Illinois, Div Pediat Hematol Oncol, Dept Pediat, Chicago, IL USA
[6] Univ Illinois, Dept Pharm Practice, Chicago, IL USA