Association of metabolic gene polymorphisms with tobacco consumption in healthy controls. - Smits,K.M.; Benhamou,S.; Gaspari,L.; Weijenberg,M.P.; Alamanos,Y.; Ambrosone,C.; Autrup,H.; Autrup,J.L.; Baranova,H.; Bathum,L.; Boffetta,P.; Brockmöller,J.; et al. (Int J Cancer, 2004)