title: Smoking makes Marlboro cowboy 'unfit'.
authors.forename: J
authors.initials: J
authors.lastname: Ko
authors.forename: D
authors.initials: D
authors.lastname: But
authors.forename: M C
authors.initials: MC
authors.lastname: Kwan
authors.forename: Z
authors.initials: Z
authors.lastname: Yu
authors.forename: T H
authors.initials: TH
authors.lastname: Lam
authors.forename: G M
authors.initials: GM
authors.lastname: Leung
mesh_terms: D007172:Erectile Dysfunction / Q000209:etiology*; D006801:Humans; D008297:Male; D012907:Smoking / Q000009:adverse effects*