title: [Doubling of the mitral valve].
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005260:Female; D006330:Heart Defects, Congenital / Q000175:diagnosis / Q000601:surgery; D006801:Humans; D008297:Male; D008943:Mitral Valve / Q000002:abnormalities*
vernacular_title: Udvoenie mitral'nogo klapana.