1. ISGlobal; Centre for Research in Environmental Epidemiology (CREAL); Barcelona Spain
2. Departament de Ciències Experimentals i de la Salut; Universitat Pompeu Fabra; Barcelona Spain
3. CIBER Epidemiología y Salud Pública (CIBERESP); Madrid Spain
4. Cancer and Environmental Epidemiology Unit; National Centre for Epidemiology, Carlos III Institute of Health; Madrid Spain
5. Cancer Epidemiology Research Group, Oncology and Hematology Area; IIS Puerta De Hierro; Madrid Spain
6. Research Group on Gene-Environment Interactions and Health; , University of León; León Spain
7. Department of Clinical Sciences and Community Health; Università degli Studi di Milano; Milan Italy
8. Department of Epidemiology; IRCCS - Istituto di Ricerche Farmacologiche Mario Negri; Milan Italy
9. Unit of Epidemiology and Biostatistics, IRCCS; CRO Aviano National Cancer Institute; Aviano Italy
10. University of Cantabria, IDIVAL; Santander Spain
11. Public Health Division of Gipuzkoa; San Sebastián Spain
12. Biodonostia Research Institute; San Sebastián Spain
13. Navarra Public Health Institute; Pamplona Spain
14. SOC Igiene ed Epidemiologia Clinica; Azienda Ospedaliera Universitaria; Udine Italy
15. Oncology Institute IUOPA; Universidad de Oviedo; Asturias Spain
16. Centre for Research in Public Health; Valencia Spain
17. Department of Epidemiology IMIB-Arrixaca; Murcia Regional Health Council; Murcia Spain
18. Department of Health and Social Sciences; University of Murcia; Murcia Spain
19. IMIM (Hospital del Mar Medical Research Institute); Barcelona Spain
20. Catalan Institute of Oncology; Bellvitge Biomedical Research Institute (IDIBELL); Barcelona Spain
21. University of Barcelona; Barcelona Spain
22. University of Modena and Reggio Emilia; Modena Italy