Hydroxyurea therapy for children with sickle cell anemia in sub-Saharan Africa: Rationale and design of the REACH trial - McGann, PT; Tshilolo, L; Santos, B; Tomlinson, GA; Stuber, S; Latham, T; Aygun, BA; Obaro, SK; Olupot-Olupot, P; Williams, TN; Odame, I; Ware, RE (Pediatric Blood & Cancer, 2015)