3Harmon W J, Sershon P D, Blute M L,et al. Ureteroscopy:current practice and long-term eomplitions[J]. J Urol, 1997 ,157(1):28-32.
4Alapont A J,Broseta R E , Heinrichs B, et al. Complication of ureterorenoscopy[J]. Actas Urol Esp, 2003,27(9):692--699.
5Puppo P, Ricciotti G, Bozzo W, et al. Primary endo-scopic treatment of ureteric calcui. A review of 378 cases[J]. Eur Uro1,1999,36(1) :48--52.
6Maheshwar P N, Oswal A T, Andankar M, et al. Is antegrade ureteroscopy better than retrograde ureteroscopy for impacted large upper ureteral calculi[J]. J Endourol ,1999,13(2):441.
7Schuster T G, Hollenbeck B K, Faerber G J, et al.Complications of ureteroscopy:analysis of predictive factors[J]. J Urol,2001,166(2) :538-540.
