1. Biostatistics Branch, Division of Cancer Epidemiology and GeneticsNational Cancer Institute, DHHS, NIH Bethesda MD
2. Radiation Epidemiology Branch, Division of Cancer Epidemiology and GeneticsNational Cancer Institute, DHHS, NIH Bethesda MD
3. Department of Mathematics and StatisticsUniversity of Wyoming Laramie WY
4. Surveillance and Health Services Research ProgramAmerican Cancer Society Atlanta GA