Spontaneous conversion of chronic atrial fibrillation of twenty-two years' duration to sinus rhythm.
D001281:Atrial Fibrillation; D002430:Cecal Neoplasms / Q000150:complications; D002908:Chronic Disease; D008944:Mitral Valve Insufficiency / Q000150:complications*; D012075:Remission, Spontaneous; D012214:Rheumatic Heart Disease / Q000150:complications*; D013997:Time Factors