1. Department of Medicine, Division of Hematology/Oncology, Vanderbilt-Meharry Center for Excellence in Sickle Cell Disease, Vanderbilt University Medical Center, Nashville, TN, USA
2. College of Medicine, Division of Pediatric Hematology & Oncology, Lagos University Teaching Hospital, Lagos, Nigeria
3. Department of Pediatrics, Pediatric Hematopoietic Cell Transplant, Vanderbilt University Medical Center, Nashville, TN, USA