Preoperative pectoralis muscle index predicts distant metastasis-free survival in non-small cell lung cancer patients: a retrospective study. - Zhihui Shi; Lin Wu; Dengke Jiang; Ruiling Yang; Rui Liao; Lizhu Liu; Ruimin You; Yanli Li; Xingxiang Dong; Dafu Zhang; Jing Wang; Xuewen Zhang; et al. (BMC Medical Imaging, 2025)