9Lin MH, Wang NK, Hung KL et al. Spontaneous closure of ventricular septal defects in the first year of life. J Formos Med Assoc 2001 Aug,100 (8): 539.
10Riggs T, Sharp SE, Batton D et al. Spontaneous closure of atrial septal defects in premature vs. full-term neonates. Pediatr Cardiol 2000, 21(2) : 129.