1. Turk C, Petrik A, Sarica K, Seitz C, Skolarikos A, Straub M, Knoll T. EAU Guidelines on Interventional Treatment for Urolithiasis. Eur Urol. 2016; 69:475–482.
2. Cho SY. Current status of flexible ureteroscopy in urology. Korean J Urol. 2015; 56:680–688.
3. Rassweiler J, Rassweiler MC, Klein J. New technology in ureteroscopy and percutaneous nephrolithotomy. Curr Opin Urol. 2016; 26:95–106.
4. Dauw CA, Simeon L, Alruwaily AF, Sanguedolce F, Hollingsworth JM, Roberts WW, et al. Contemporary practice patterns of flexible ureteroscopy for treating renal stones: results of a worldwide survey. J Endourol. 2015; 29:1221–1230.
5. Lee YJ, Bak DJ, Chung JW, Lee JN, Kim HT, Yoo ES, et al. Is it necessary to actively remove stone fragments during retrograde intrarenal surgery? Investig Clin Urol. 2016; 57:274–279.
6. Chew BH, Brotherhood HL, Sur RL, Wang AQ, Knudsen BE, Yong C, et al. Natural history, complications and re-intervention rates of asymptomatic residual stone fragments after ureteroscopy: a Report from the EDGE Research Consortium. J Urol. 2016; 195(4P1):982–986.
7. Hein S, Miernik A, Wilhelm K, Adams F, Schlager D, Herrmann TR, et al. Clinical significance of residual fragments in 2015: impact, detection, and how to avoid them. World J Urol. 2016; 34:771–778.