1. Division of Hematology, Department of Medicine, Montefiore Hospital and Medical Center, Bronx, N.Y.; The Laboratory of Experimental Hematology, Department of Biology, Graduate School of Arts and Science, New York University, New York, N. Y.; Section of Hematology, Morrisania-Montefiore Affiliation, Bronx, N. Y.; and the Department of Medicine (Hematology), Mount Sinai School of Medicine of the Ci
2. Department of Hematology, Memorial Hospital for Cancer and Allied Diseases, New York, N. Y.; formerly Research Fellow, Division of Hematology, Department of Medicine, Montefiore Hospital and Medical Center, Bronx, N. Y.
3. Division of Hematology Mount Sinai School of Medicine, New York, N. Y.
4. Montefiore-Morrisania Affiliation, Bronx, N. Y.
5. Mount Sinai School of Medicine, New York, N. Y.
6. Laboratory of Experimental Hematology, Department of Biology, Graduate School of Arts and Science, New York University, New York, N. Y.