How Effective Is Retrograde Semirigid and Flexible Ureteroscopic Lithotripsy for the Treatment of Large Ureteral Stones Equal of or Greater than 15 mm? Results from a Single Center. - Kozyrakis, Diomidis G.; Kratiras, Zisis K.; Perikleous, Stefanos K.; Zarkadas, Anastasios P.; Chatzistamoy, Styliani-Elissavet E.; Karagiannis, Dimitrios K.; Solinis, Ioannis T. (Urologia Internationalis, 2019)