Exploration and discovery of treatment targets for primary biliary cholangitis based on plasma and cerebrospinal fluid proteomics: A multicenter mendelian randomization study. - Xi, Jianxin; Wang, Shengnan; Chen, Jie; Law, Jason Chi Shing; Wang, Jianglong; Lee, Guan Huei; Fan, Zhongqi; Lv, Guoyue; Chen, Yuguo (PLoS ONE, 2026)