Risk of C1q variation in systemic lupus erythematosus: a meta-analysis with Trial Sequential Analysis - Wang, Hong; Wang, Tingrui; Wang, Haili; Wu, Yue; Wu, Lingling; Ling, Huayun; Ye, Dong-Qing; Wang, Bin (Advances in Dermatology and Allergology/Postępy Dermatologii i Alergologii, 2022)