1 Unit of Nutrition and Cancer, Cancer Epidemiology Research Programme, Catalan Institute of Oncology (ICO-IDIBELL) Barcelona, Spain. Electronic address: cagonzalez@iconcologia.net.
2 Unit of Nutrition and Cancer, Cancer Epidemiology Research Programme, Catalan Institute of Oncology (ICO-IDIBELL) Barcelona, Spain.
3 Center for Biomedical Research in Epidemiology and Public Health Network, Madrid, Spain; Department of Epidemiology, Murcia Regional Health Council, Murcia, Spain; Department of Health and Social Science, Universidad de Murcia, Murcia, Spain.
4 Ministry of Health of the Basque Government, Sub Directorate for Public Health and Addictions of Guipuzkoa, BioDonostia Research Institute, San Sebastian, Spain.
5 INGENIO (Spanish National Research Council and the Universitat Politècnica de València), Valencia, Spain.