1. Department of Psychology and Human DevelopmentVanderbilt University Nashville Tennessee
2. Division of Hematology/OncologyDepartment of MedicineVanderbilt Ingram Cancer CenterVanderbilt University Medical Center Nashville Tennessee
3. Division of Hematology/OncologyDepartment of MedicineVanderbilt‐Meharry Sickle Cell Disease Center of Excellence, Vanderbilt University School of Medicine Nashville Tennessee
4. Department of PaediatricsSt. Mary's HospitalImperial College London UK