1. University of California, Irvine, Irvine, California, USA
2. Institute for Radiological Protection and Nuclear Safety, Fontenay-aux-Roses, France
3. Occupational Cancer Research Centre, Toronto, Canada
4. Federal Office for Radiation Protection, Munich (Neuherberg), Germany
5. Colorado School of Public Health, Aurora, Colorado, USA
6. National Institute for Occupational Safety and Health, Cincinnati, Ohio, USA
7. International Agency for Research on Cancer, Lyon, France
8. National Radiation Protection Institute, Prague, Czech Republic
9. University of California, San Francisco, San Francisco, California, USA
10. University of New Mexico, Albuquerque, New Mexico, USA
11. New Mexico Tumor Registry, Albuquerque, New Mexico, USA