1. Blood Research Laboratory, New England Medical Center Hospitals and the Department of Medicine, Tufts University School of Medicine, Boston, Massachusetts.
2. Research Fellow in Hematology, Blood Research Laboratory, New England Medical Center Hospital and Teaching Fellow in Medicine, Tufts University School of Medicine, Boston, Mass.
3. Grant #AM 5210-06 from the National Institute of Arthritis and Metabolic Disease, Blood Research Laboratory, New England Medical Center Hospitals, Boston, Mass.
4. New England Medical Center Hospitals; Associate Professor of Medicine, Tufts University School of Medicine, Boston, Mass.