7[1]Jane M,Kalyn A,Pinelli J,et al.A ramdomized trial compaying peripherally inserted central venous catheters and peripheral intravenous catheters in infants with very low birth weight[J].JPe-diatr Surg,2000,35(7):1040～1044
8[2]Foor,Fujii A,Harris JA,et al.Complications in tunneled CVL versus PICC lines in very low birth wright infants[J].JPerinatol,2001,21(8):525～530
