1Lock JE, Block PC, Mckay RG , et al. Transcatheter closure of ventricular septal defects. Cixculation, 1988,78:361-368.
2Bridges Nancy D, Perry Stanton B, Keane John F, et al.Preoperative tnmscatheter closure of congenital muscular ventricular septal defects. N Eng Med. 1991.324:1312-1317.
3Kalra Gureharan S, Verma Puneet K, Khall Anil, et al.Transcatheter device closure of ventricular septal defects:immediate results and intermediate-term follow-up. Am Heart J, 1999, 138:339-444.
4Amin Zalid, Gu Xiaoping, Berry James M, et al. New device for closure of muscular ventricular septal defects in a canine model.Circulation, 1999,100:320-328.
5Leung MP, Mak CK, Lo RNS, et al. An echocardingraphic study perimembranous ventricular septal defect with left ventricular to right atrial shunting. Br Heart J, 1986,55:45-52.