1. Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, Maryland
2. Centre for Public Health, School of Medicine, Dentistry and Biomedical Science, Queen’s University Belfast, United Kingdom
3. Office of Surveillance and Epidemiology, Center for Drug Evaluation and Research US Food and Drug Administration, Silver Spring, Maryland
4. Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Georgetown University, Washington, DC