title: Occurrence of mitral valve prolapse in nonsmoker spontaneous pneumothorax patients.
authors.forename: L
authors.initials: L
authors.lastname: Bense
authors.forename: O
authors.initials: O
authors.lastname: Edhag
authors.forename: G
authors.initials: G
authors.lastname: Eklund
authors.forename: K E
authors.initials: KE
authors.lastname: Karlberg
mesh_terms: D006801:Humans; D008945:Mitral Valve Prolapse / Q000453:epidemiology*; D011030:Pneumothorax / Q000453:epidemiology*; D012907:Smoking / Q000453:epidemiology*