1. Epidemiology Research Program; American Cancer Society; Atlanta GA
2. Department of Cancer Epidemiology; Moffitt Cancer Center; Tampa FL
3. Infection and Cancer Program; German Cancer Research Center (DKFZ); Heidelberg Germany
4. Amgen Research (Munich) GmbH; Munich Germany
5. Unit of Infections and Cancer; Cancer Epidemiology Research Programe; Institut Català d'Oncologia, IDIBELL; Barcelona Spain
6. CIBER Epidemiology and Public Health; Barcelona Spain