1. Division of Cancer Prevention and Control, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention; Atlanta Georgia
2. Department of Biostatistics, College of Public Health; University of Kentucky; Lexington Kentucky
3. Markey Cancer Center, Kentucky Cancer Registry, and College of Public Health; University of Kentucky; Lexington Kentucky
4. Cancer Survival Group, Department of Non-Communicable Disease Epidemiology, London School of Hygiene and Tropical Medicine; London United Kingdom