Azhar, R. A., Alghamdi, M. M., Khawaji, A. A., Nassir, A. M. ., Munshi, S., Tayeb, W. and Elkoushy, M. A. (2022) “Effective ureteral access sheath insertion during flexible ureteroscopy: Influence of the ureteral orifice configuration”, Canadian Urological Association Journal, 16(7), pp. E375–80. doi: 10.5489/cuaj.7656.