Risks of early commissurotomy.
D002114:Calcinosis / Q000150:complications / Q000209:etiology; D006801:Humans; D008944:Mitral Valve Insufficiency / Q000209:etiology; D008946:Mitral Valve Stenosis / Q000401:mortality / Q000601:surgery*; D012008:Recurrence; D013997:Time Factors