[Mass cardiological observations in the early diagnosis of cardiovascular diseases and in the prevention of rheumatic heart disease: case-finding on 962 subjects].
D002309:Cardiology; D002318:Cardiovascular Diseases / Q000175:diagnosis*; D003935:Diagnostic Techniques, Cardiovascular; D042241:Early Diagnosis; D006801:Humans; D012214:Rheumatic Heart Disease / Q000517:prevention & control*
CARDIOVASCULAR DISEASES/diagnosis; RHEUMATIC HEART DISEASE/prevention and control