1. Radiation Effects Research Foundation, Hiroshima and Nagasaki, Japan
2. Hirosoft International, Eureka, California
3. Karolinska Institutet, Stockholm, Sweden
4. Welfare Association Onomichi General Hospital, Japan
5. Nagasaki Health Promotion Corporation, Nagasaki, Japan
6. Hiroshima City Asa Hospital, Hiroshima, Japan
7. Division of Cancer Epidemiology & Genetics, National Cancer Institute, Bethesda, Maryland