Steffi Kar Kei Yuen Steffi, Shusheng Liu, Vineet Gauhar, Haixing Mai, Weiyang He, Hao Hu, Changxing Ke, Yinbo Dai, Lei Shan, Yaodong Jiang, Jingdong Yuan, Zhengguo Cao, Li Zuo, Chunting Yang, Bing Bai, Xiaofang Bi, Hengtai Zhao, Ming Xi, Ning Ding, Shuo Deng, Shan Tang, Jianwen Zeng, Jingzeng Du, Wenqi Wu, Jinxiang Ma, Wen Zhong, Zhijian Zhao, Yongda Liu, Jean de la Rosette, Guohua Zeng, Wei Zhu Steerable versus Conventional flexible and navigable suction ureteral access sheath (FANS) flexible Ureteroscopy for Lower Pole stones Treatment: study protocol for a multicentre, randomised superiority trial (SCULPT trial) // BMJ OPEN. 2025 Т.15, №12. С.e103866. doi:10.1136/bmjopen-2025-103866