1. Divisions of Hematology and Rheumatology, Scripps Clinic and Research Foundation, La Jolla, Calif.
2. Scripps Clinic and Research Foundation, La Jolla, Calif.
3. Scripps Clinic and Research Foundation, La Jolla, Calif.; Leukemia Society of America Special Fellow.
4. Director of tile Hematology Laboratory, Scripps Clinic and Research Foundation, La Jolla, Calif.
5. U.C.L.A. School of Medicine, Los Angeles, Calif.