Elucidating the causal associations and mechanisms between circulating immune cells and idiopathic pulmonary fibrosis: new insights from Mendelian randomization and transcriptomics - Yang, Han; Wu, Xuanyu; Xiao, Xiang; Chen, Jiajing; Yu, Xiaomin; Zhao, Wen; Wang, Fei (Frontiers in Immunology, 2025)