[8] His medical school thesis, which was done at Boston Children's Hospital, won the Soma Weiss and Leon Resnick Awards for Research.
[9] He completed training at the National Institutes of Health, Yale University School of Medicine and Brigham and Women's Hospital, in Boston, Mass.
[10] He is board certified in both hematology and internal medicine and remains clinically active.
At Johns Hopkins, he served as the Sir William Osler Professor of Medicine.
[20] His research centers on the molecular basis and genetics around inherited blood disorders.