1. Department of Preventive Medicine and Community Health, New Jersey Medical School, Newark, NJ 07103.
2. Epidemiology and Biostatistics Program, National Cancer Institute, Bethesda, MD 20892.
3. Laboratory of Tumor Cell Biology, National Cancer Institute, Bethesda, MD 20892.
4. Program Resources Inc., Frederick, MD 21701.
5. Bionetics Research, Inc., Rockville, MD 20850.
6. Office of the Director, National Institutes of Health, Bethesda, MD 20892.
7. Division of Hematology and Oncology, University of Alabama, Birmingham, AL 35295.
8. private practice, Bethesda, MD 20814.
9. Abbott Diagnostics Division, Abbott Laboratories, Abbott Park, IL 60064.