3Shen P F,Li Y T,Yang J,et al. The Results of Ureteral Stenting After Ureteroscopic Lithotripsy for Ureteral Calculi : A Systematic Review and Meta-Analysis. J Urol,2011,186 (5) : 1904-1909.
4Hosny KS, Mohamed EG, Mohamed EA. Semirigid Ureteroscopy in Management of Large Proximal Ureteral Calculi : Is There Still a Role in Developing Countries?. Urology, 2011,77 ( 5 ) : 1064- 1068.