1. Division of General Internal Medicine Virginia Commonwealth University Richmond VA USA
2. Department of Biostatistics Virginia Commonwealth University Richmond VA USA
3. Division of Haematology/Oncology Department of Medicine University of Florida College of Medicine Gainesville FL USA
4. Department of Pediatrics Division of Pediatric Haematology and Oncology Children’s Hospital of Richmond at Virginia Commonwealth University Richmond VA USA
5. Division of General Internal Medicine Department of Medicine Virginia Commonwealth University Richmond VA USA
6. Adult Sickle Cell Program Division of General Internal Medicine Virginia Commonwealth University Richmond VA USA
7. Department of Pediatrics Haematology & Oncology Columbus OH USA
8. Department of Internal Medicine Brody School of Medicine at East Carolina University Greenville NC USA
9. Pediatric Specialists of Virginia 6565 Arlington Boulevard Falls Church VA USA
10. Eastern Virginia Medical School Medical Service Hampton VA Medical Center Hampton VA USA