The usefulness and ergonomics of a new robotic system for flexible ureteroscopy and laser lithotripsy for treating renal stones oleh Juhyun Park, Chan Hoon Gwak, Dongwon Kim, Jung Hyun Shin, Bumjin Lim, Joonhwan Kim, Byungsik Cheon, Jungmin Han, Dong-Soo Kwon, Hyung Keun Park