1. The natural history of ventricular septal defects in infancy;Hoffman;Am J Cordial,1965
2. Spopontaneous closure of ventricular septal defects;Li;Can Med Assoc,1969
3. Spontaneous closure of small ventricular septal defects: probability rates in the first five years of life;Alpert;Am I Dis Child,1973
4. Spontaneous closure of small ventricular septal defects: ten year follow-up;Alpert;Pediatrics,1979
5. The natural history of isolated ventricular septal defects with special reference to selection of patients for surgery;Hoffman,1970