N Engl J Med 2014 Aug;371(8):699-710
From the Department of Pediatrics, Division of Hematology-Oncology, Vanderbilt-Meharry Center of Excellence in Sickle Cell Disease, Vanderbilt University School of Medicine, Nashville (M.R.D.); Department of Ophthalmology and Visual Sciences, Division of Biostatistics (M.G.), Departments of Radiology and Pediatrics (R.C.M.), Neurology and Pediatrics (M.J.N.), and Psychology (D.A.W.), the Program in Occupational Therapy and Department of Pediatrics Hematology-Oncology (A.A.K.), and the Division of Biostatistics and Department of Internal Medicine (J.P.M.), Washington University School of Medicine, St. Louis; Department of Pediatrics, Division of Hematology-Oncology, Wayne State University, Detroit (S.A.S.); Center for Cancer and Blood Disorders, Children's National Medical Center, Department of Pediatrics, George Washington University Medical Center (E.R.M.), and Department of Pediatrics, Division of Hematology-Oncology, Georgetown University Hospital (C.E.G.) - all in Washington, DC; Department of Pediatrics, Division of Hematology-Oncology, University of Alabama at Birmingham, Birmingham (T.H.H.); Department of Pediatrics, Division of Hematology-Oncology, University of Mississippi Medical Center, Jackson (S.M.); Department of Paediatrics, Evelina Children's Hospital, St. Thomas' Hospital NHS Trust (B.P.D.I.), Department of Pediatric Hematology, Royal London Hospital, Barts Health NHS Trust (P.T.T.), and the Neurosciences Unit, Institute of Child Health, University College London (F.J.K.) - all in London; Hospital for Sick Children, Department of Paediatrics, Haematology-Oncology, University of Toronto, Toronto (M.K.-A.); Division of Hematology-Oncology, Department of Pediatrics, UT Southwestern Medical Center, Dallas (T.L.M.C.); Département Pédiatrie, Hôpital Intercommunal de Creteil, Creteil, France (A.K.); Department of Pediatrics, Division of Hematology-Oncology, Baylor College of Medicine, Houston (G.A.); Department of Pediatrics, Hematology-Oncology, Univer