1. Department of Medicine and Division of Hematology, The Mount Sinai Hospital and Mount Sinai School of Medicine of the City University of New York, New York, N. Y.
2. Mount Sinai School of Medicine, New York, N. Y.
3. Mount Sinai School of Medicine, New York, N. Y.; holder of USPHS Senior Postdoctoral Fellowship AM39795.
4. Mount Sinai School of Medicine, New York, N. Y.; Scholar of tile Leukemia Society of America.
5. College of Physicians and Surgeons, Columbia University, New York, N. Y.; formerly Professor of Medicine, Mount Sinai School of Medicine, New York, N. Y.; holder of Health Research Council of tile City of New York Career Scientist Award 1-435 and a Veterans Administration Medical Investigatorship.