1. Genetic and Molecular Epidemiology Group; Spanish National Cancer Research Centre (CNIO), Madrid, CIBERONC; Spain
2. Division of Cancer Epidemiology and Genetics, Department of Health and Human Services; National Cancer Institute; Bethesda MD
3. Department of Preventive Medicine; Universidad de Oviedo, CIBERESP; Spain
4. Center for Research in Occupational Health (CiSAL), Universitat Pompeu Fabra, IMIM-Hospital del Mar Medical Research Institut, Barcelona, CIBERESP; Spain
5. Hospital Universitario de Canarias; La Laguna Spain
6. Servicio de Oncología, Hospital Universitario Ramon y Cajal, Madrid, Servicio de Oncología, Hospital Universitario de Elche, CIBERONC; Spain
7. Epithelial Carcinogenesis Group, Spanish National Cancer Research Centre (CNIO), Madrid, Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, Barcelona, CIBERONC; Spain
8. ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Universitat Pompeu Fabra (UPF), CIBER Epidemiología y Salud Pública (CIBERESP), IMIM (Hospital del Mar Medical Research Institute); Barcelona Spain