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2. The innocent murmur: A problem in clinical practice;Caceres,1967
3. The Athlete’s heart;Crawford;Adv. Intern. Med.,1979
4. Extracardiac anomalies in infants with congenital heart disease;Greenwood;Pediatrics.,1975
5. A classification of systolic murmurs;Leatheur;Br. Heart J.,1975