Paolo Vineis , Nuria Malats , Miquel Porta , Francisco X. Real c ` a Unit of Cancer Epidemiology, Dipartimento di Scienze Biomediche e Oncologia Umana and CPO-Piemonte, Õia Santena 7, Torino, I-10126 Italy b ( ) Institut Municipal d’InÕestigacio’ Medica IMIM , UniÕersitat Autonoma de Barcelona, Carrer del Dr Aiguader 80, Barcelona, E-08003 ` Spain c ( ) Unitat de Biologia Cellular i Molecular, ...