1. Hematology Cytogenetics Research Laboratory, Veterans Administration Research and Education Service; Department of Medicine, University of Southern California, School of Medicine; Department of Medicine, University of California School of Medicine, Los Angeles, Calif., and the Veterans Administration Hospital and the University of California School of Medicine, San Francisco, Calif.
2. Emeritus, University of Southern California, School of Medicine, Los Angeles, Calif. 90033.
3. University of California School of Medicine, San Francisco, Calif. 94121.
4. Michigan State University, Lansing, Mich. 48914; formerly Associate Professor of Medicine, University of California School of Medicine, Los Angeles, Calif. 90033. Recipient of USPHS Grant AM 05112.