title: [Pre-existing disorders of primary lung cancer: background analysis of multiple primary lung cancer--what are the initiation factors of carcinogenesis?].
authors.forename: T
authors.initials: T
authors.lastname: Nukiwa
authors.forename: S
authors.initials: S
authors.lastname: Kira
mesh_terms: D002857:Chromium / Q000009:adverse effects; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D006801:Humans; D008175:Lung Neoplasms / Q000139:chemically induced / Q000209:etiology* / Q000473:pathology; D009378:Neoplasms, Multiple Primary; D009784:Occupational Diseases / Q000139:chemically induced; D009857:Oncogenes; D011658:Pulmonary Fibrosis / Q000150:complications; D012307:Risk Factors; D013997:Time Factors
chemical_list: D002857:Chromium