Effect of olive oils on biomarkers of oxidative DNA stress in Northern and Southern Europeans. - Machowetz,A.; Poulsen,HE.; Gruendel,S.; Weimann,A.; Fito,M.; Marrugat,J.; Torre,R de la.; Salonen,JT.; Nyyssonen,K.; Mursu,J.; Nascetti,S.; Gaddi,A.; et al. (Faseb J, 2007)