title: Cryptogenic hemoptysis and smoking.
authors.forename: Junichiro
authors.initials: J
authors.lastname: Hiyama
authors.forename: Naokatsu
authors.initials: N
authors.lastname: Horita
authors.forename: Yutaro
authors.initials: Y
authors.lastname: Shiota
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Ono
authors.forename: Michio
authors.initials: M
authors.lastname: Yamakido
mesh_terms: D015984:Causality; D003430:Cross-Sectional Studies; D006469:Hemoptysis / Q000453:epidemiology / Q000209:etiology*; D006801:Humans; D012307:Risk Factors; D012621:Seasons; D012907:Smoking / Q000009:adverse effects*