Bidirectional association between rheumatoid arthritis and chronic obstructive pulmonary disease: a systematic review and meta-analysis - Wang, Meijiao; Pan, Hejing; Zhai, Yingqi; Li, Haichang; Huang, Lin; Xie, Zhijun; Wen, Chengping; Li, Xuanlin (Frontiers in Immunology, 2024)