[Clinical study of rheumatic fever patients in sub-clinical stages. 2. Electrocardiographic findings].
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D011379:Prognosis; D012213:Rheumatic Fever / Q000175:diagnosis*; D012214:Rheumatic Heart Disease / Q000175:diagnosis*