1. Division of Cancer Epidemiology and Genetics; National Cancer Institute; Rockville MD USA
2. Bicêtre University Hospital; Le Kremlin-Bicêtre France
3. Cancer Prevention Institute of California; Fremont CA USA
4. Texas Department of State Health Services; Austin TX USA
5. New Jersey Department of Health; Trenton NJ USA
6. Department of Radiation Oncology; University of Utah; Salt Lake City UT USA