1. Division of Hematologic Research, The Memorial Hospital, Pawtucket, and Brown University, Providence, Rhode Island.
2. The Memorial Hospital, Pawtucket, RI.
3. Brown University, Providence, RI.; Associate Director, Divinon of Henzatologic Research, The Memorial Hospital, Pawtucket, RI.
4. Professor of Medicine (Clinical), Brown University, Providence, RI.; Hematologist-in-Chief and Director, Divi.rion of Heniatologic Research, The Memorial Hospital, Pawtucket, RI.