Cardiac murmurs in school children.
D018376:Cardiovascular Abnormalities / Q000706:statistics & numerical data*; D006337:Heart Murmurs; D006347:Heart Sounds; D012213:Rheumatic Fever / Q000706:statistics & numerical data*; D013016:Sound
CARDIAC MURMURS AND SOUNDS; CARDIOVASCULAR DEFECTS, CONGENITAL/statistics; RHEUMATIC FEVER/statistics