E167 Preoperative evaluation of pediatric kidney stone prior to percutaneous nephrolithotomy: Is computed tomography really necessary? - Tepeler, A.; Sancaktutar, A.A.; Taskiran, M.; Silay, M.S.; Bodakci, M.N.; Akman, T.; Tanriverdi, O.; Resorlu, B.; Armagan, A.; Sarica, K. (European Urology Supplements, 2013)