被动或不自觉的吸烟可能为肺癌的一个病因,作者在美国路易斯安那州调查了配偶和双亲吸烟对肺癌发病的影响。作者调查了1338名病理诊断为原发性肺癌的病人,支气管肺泡癌不包括在内。从病人所在的同一医院内随机挑选种族、性别和年令与之相称的1393名 Passive or unconscious smoking may be a cause of lung cancer, the authors investigated in Louisiana, United States spouses and parents of smoking on the incidence of lung cancer. The authors investigated 1,338 patients with pathologically diagnosed primary lung cancer, and bronchial alveolar carcinoma was excluded. Randomly selected from the same hospital where the patient race, sex and year commensurate with 1393