1. Hematology Service and the Nuclear Medicine Department, Clinical Center, National Institutes of Health, Bethesda, Md., and the Solid Tumor Service, Medicine Branch, National Cancer Institute, Bethesda, Md.
2. Clinical Center, National Institutes of Health, Bethesda, Md.
3. Dept, of Nuclear Medicine, Georgetown University, Washington, D.C.; formerly Nuclear Medicine Department, Clinical Center, National Institutes of Health, Bethesda, Md.
4. Lymphoma Treatment, Kampola, Uganda; formerly Solid Tumor Service, Medicine Branch, National Cancer Institute, Bethesda, Md.