5SANTORO G,CAPFELLI M,CARROZZA M, el al. Percutaneoustreatment moderate - to - large patent ductus arteriosus withdifferent devices : early mid-term results [J]. Ital Hear J,2005,6(5):396-400.
6BILKIS A A, ALWI M, HASR1 S,et al. The Amplatzer ductoccluder : experience in 209 patients [ J ] .J Am Coll Cardiol ,2001,37(1);258-261.