title: Phonocardiographic assessment of the prevalence of mitral valve prolapse in the prospective survey of heart disease in schoolchildren: a seven year cumulative study.
mesh_terms: D000367:Age Factors; D002648:Child; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008945:Mitral Valve Prolapse / Q000453:epidemiology*; D010701:Phonocardiography; D011446:Prospective Studies; D012737:Sex Factors