Division of the inferior pulmonary ligament during upper lobectomy does not improve postoperative pulmonary function: a systematic review and meta-analysis of observational studies and randomized controlled trials. - Chen, Boyang; Tang, Weifeng; Chen, Junhai; Kang, Mingqiang; Xie, Jinbiao; Wang, Wu; Yang, Tianbao; Huang, Shijie (World Journal of Surgical Oncology, 2025)