参考文献/References:
Kalra GS.Verma PK.Singh S Transcatheter closure of ventricular septal defect using detachable steel coil 1999
Sideris EB.Walsh KP.Haddad JL Occlusion of congenital ventricular septal defects by the buttoned device 1997
Janorkar S.Goh T.Wilkinson J