1Fong YK, Ho SH,Peh OH et al . Extracorporeal shockwave lithotripsy and intracorporeal lithotripsy for proximal ureteric calculi - - a comparative assessment of efficacy and safety, Ann Acad Med Singapore, 2004,33(1) :80
2Ullah S,Kammn T, Zaheer K et al .Pneumatic lithotripsy for the management of ureteric calculi.J Coll Physicians Surg Pak,2003,13(2):101
3Marcovich R,Jacobson AI, Singh Jet al . Nopanacea for drainage after percutaneous nephrolithotomy. J Endourol,2004,18(8 ) : 74 327
