Case Report: Familial hypocalciuric hypercalcemia type 1 with a novel mutation combined with Gitelman syndrome and a review of the literature - He, Taoyuan; Li, Xinyu; Li, Guosheng; Wang, Wanyang; Fu, Hongjun; Gao, Zhengnan; Liu, Xuhan (Frontiers in Endocrinology, 2025)