title: [Difficulties and errors in the diagnosis of mitral valve insufficiency].
mesh_terms: D000293:Adolescent; D000328:Adult; D003937:Diagnosis, Differential; D003951:Diagnostic Errors; D006801:Humans; D008722:Methods; D008944:Mitral Valve Insufficiency / Q000175:diagnosis*; D008945:Mitral Valve Prolapse / Q000175:diagnosis; D012214:Rheumatic Heart Disease / Q000175:diagnosis
vernacular_title: Trudnosti i oshibki v raspoznavaniii nedostatochnosti mitral'nogo klapana.