1. Medical Oncology Department, Catalan Institute of Oncology-Badalona (ICO), Applied Research Group in Oncology (B-ARGO), IGTP, 08916 Badalona
2. Cancer Epidemiology Research Program, Catalan Institute of Oncology (ICO)-IDIBELL, L’Hospitalet de Llobregat, 08908 Barcelona
3. Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), 28029 Madrid, Spain