1. Argonne Cancer Research Hospital, operated by the University of Chicago for the United States Atomic Energy Commission, and the Department of Medicine, University of Chicago, Chicago, Ill.
2. Department of Medicine, University of Chicago IlospitaLi and Clinics, and the Argonne Cancer Research Hospital, Chicago, Ill.; Schweppe Foundation Fellow.
3. at present, United States Naval Medical Research Unit #3, do American Embassy, Cairo, Egypt.
4. Department of Medicine, University of Chicago Hospitals and Clinics, Chicago, Ill.