1. Instituto de Salud Global de Barcelona (ISGlobal), Barcelona, Spain
2. Universitat Pompeu Fabra (UPF), Barcelona, Spain
3. CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
4. Unit of Cardiovascular and Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
5. Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
6. Cancer and Environmental Epidemiology Unit, National Centre for Epidemiology, Carlos III Institute of Health, Madrid, Spain
7. Faculty of Medicine, University of Cantabria, Spain
8. Cancer and Public Health Area, Foundation for the Promotion of Health and Biomedical Research-Public Health Research (FISABIO), Valencia, Spain
9. Health Research Institute of Asturias (ISPA), Oviedo, Spain
10. Cancer Epidemiology Research Programme, Catalan Institute of Oncology, Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Spain
11. Epidemiology Section, Public Health Division, Department of Health of Madrid, Madrid, Spain
12. Instituto de Investigación Sanitaria Valdecilla (IDIVAL), Santander, Spain
13. Unit of Biomarkers and Susceptibility, Cancer Prevention and Control Program, Catalan Institute of Oncology (ICO), Hospitalet de Llobregat, Spain
14. Colorectal Cancer Group, IDIBELL, Hospitalet de Llobregat, Spain
15. Department of Clinical Sciences, Faculty of Medicine, University of Barcelona, Barcelona, Spain