1. Department of Pathology; University of Pittsburgh School of Medicine; Pittsburgh Pennsylvania
2. Department of Physiology and the Cancer Center; Medical College of Wisconsin; Milwaukee Wisconsin
3. Radiation Epidemiology Branch; Division of Cancer Epidemiology and Genetics; National Cancer Institute; National Institutes of Health; Bethesda Maryland
4. State Institution V. P. Komisarenko Institute of Endocrinology and Metabolism of the Academy of Medical Sciences of Ukraine; Kiev Ukraine
5. Department of Radiation Oncology; Cancer Institute of New Jersey; University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School; New Brunswick New Jersey