1. Unit of Infections and Cancer, Cancer Epidemiology Research Program, Institut Català d'Oncologia; Barcelona Spain
2. CIBER en Epidemiología y Salud Pública (CIBERESP); Spain
3. Pathology Department; Mexican Oncology Hospital, IMSS; Mexico DF Mexico
4. National Cancer Center; Seoul South Korea
5. Pathology Department; Weill Cornell Medical Centre; New York Hospital; New York USA
6. DDL Diagnostic Laboratory; Rijswijk The Netherlands
7. Instituto Nacional de Cancerología; Bogotá Colombia
8. Pathology Department; Instituto Portugués de Oncología de Lisboa Francisco Gentil, CEDOC-FCM NOVA University; Lisbon Portugal
9. Pathology Department; Hospital del Mar; Barcelona Spain
10. Instituto de Investigaciones en Ciencias de la Salud-UniversidadNacional de Asunción; Asunción Paraguay
11. Cancer Research Center, University of Hawaii; Honolulu USA
12. Cedars Sinai Medical Center; Los Angeles USA
13. The Fingerland Department of Pathology; Charles University, Faculty of Medicine and University Hospital Hradec Kralove; Prague Czech Republic
14. Hospital Oncológico; Quito Ecuador
15. College of Public Health; The University of Iowa; Iowa City USA
16. Third Faculty of Medicine and Faculty Hospital King's Vineyards; Prague Czech Republic
17. Institute of Microbiology and Immunology; Faculty of Medicine, University of Ljubljana; Slovenia
18. Jagiellonian University Medical College; Krakow Poland
19. Hospital Residència Sant Camil; Sant Pere de Ribes; Spain
20. Unité Fonctionelle Biologia Cellulaire, CHU Reims, Laboratoire Pol Bouin, Hôpital Maison Blanche; Reims France
21. Department of Social and Preventive Medicine; Université de Montréal; Montreal Canada
22. German Cancer Research Center (DKFZ); Heidelberg Germany
23. Cancer Institute of Colombia; Colombia