Prevalence of heart disease in school children of Karachi.
D000293:Adolescent; D002648:Child; D002980:Climate; D005260:Female; D006326:Heart Auscultation; D006330:Heart Defects, Congenital / Q000453:epidemiology; D006331:Heart Diseases / Q000453:epidemiology*; D006801:Humans; D008297:Male; D010154:Pakistan; D012213:Rheumatic Fever / Q000453:epidemiology; D012214:Rheumatic Heart Disease / Q000453:epidemiology; D012572:School Health Services; D012924:Social Conditions; D013291:Streptococcus / Q000302:isolation & purification