1. Medovy, H.: Personal communication re use of health history questionnaires in Winnipeg schools.
2. Auscultation of the Heart in Infants and Children;Castle;Pediatrics,1960
3. The Health Examination of Adolescents;Gallagher;New England J. Med.,1943
4. Preventive Pediatrics–Child Health and Development;Harper,1962
5. Practices and Pitfalls in the Early Detection and Control of Heart Disease in Children;Hubbard;J. Pediat.,1960