4Singh I, Gupta N P, Hemal A K. et al. Sever ely en crusted potyuret bane ureteral stems= management and analysis of potential risk factors[J]. Urology, 2001, 58(4): 526--531.
5Marx M, Bettmann MA, Bridge S, et al. The effects of various indwelling ureteral catheter materials on the normal canine ureter.J Urol, 1988, 139:180-185.
6Zisman A, Siegel YI, Siegmann A, et al. Spontaneous ureteralstent fragmentation. J Urol, 1995, 153: 718-721.
7Monga M, Klein E, Castaneda-Zuniga WR, et al. The forgottenindwelling ureteral stent: a urological dilemma. J Urol, 1995, 153:1817-1819.
8Tschada R, Mickisch G, Rassweiler J, et al. Success and failure with double Jureteral stent: analysis of 107 cases. J Urol (Paris),1991,97:93-97.
9Lumiaho J, Heino A, Pietilainen T, et al. The morphological,in situ effects of a self-reinforced bioabsorbable polylactide(SR-PLA96) ureteric stent; an experimental study [J]. J Urol, 2000, 164: 1360-1363.
10Cormio L, Talja M, Koivusalo A, et al, Biocompatibility of various indwelling double-J stents [J]. J Urol, 1995, 153:494-496.
