1. Solid Tumor Service, Medicine Branch, National Cancer Institute, National Institutes of Health, Bethesda, Md.
2. Department of Hematology and Oncology, Letterman General Hospital, Presidio of San Francisco, San Francisco, Calif.
3. Solid Tumor Service, National Cancer Institute, Bethesda
4. Department of Medicine, Yale-New Haven Medical Center, New Haven, Conn.
5. Solid Tumor Service, National Cancer Institute, Bethesda, Md.