1. Division of Hematology, Department of Medicine, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, USA
2. Center for Sickle Cell Disease, University of Tennessee Health Science Center, Memphis, TN, USA
3. Department of Pathology, Montefiore Medical Center, Bronx, NY, USA
4. Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA