Duration of cigarette smoking is a risk factor for oropharyngeal cancer mortality among Japanese men and women: the Ibaraki Prefectural Health Study (IPHS)

Saito N, Sairenchi T, Irie F, Iso H, Iimura K, Watanabe H, Muto T, Ota H. Duration of cigarette smoking is a risk factor for oropharyngeal cancer mortality among Japanese men and women: the Ibaraki Prefectural Health Study (IPHS). Ann Epidemiol. 2013; 23(9): 546-50.