2Bose CL, Laughon MM. Patent ductus arteriosus: lack of evidence for common treatments[J]. Arch Dis Child Fetal Neo- natal Ed, 2007,92(6) :F498--502.
3Fortescue EB, Lock JE, Galvin T, et al. To close or not to close: the very small patent ductus arteriosus [J ]. Congenit Heart Dis,2010,5:354--365.
4Patrick N, Ethington, P Brian Smith, Lakshmi Katakam, et al. Treatment of patent ductus arteriosus with bidirectional flow in neonates[J]. Early Hum Dev,2011,87(5) :381--384.
7Haneda K, Sato N, Togo T, et al. Late result after correction of ventricular septal defect with severe pulmonary hypertension [ J ].Tohoku J Exp Med,1994,174 (1) :41 -48.