Predictors of in-hospital mortality in older patients undergoing distal femur fracture surgery: A case-control studyTing-An Cheng, Po-Hsuan Lai, Hao-Chun Chuang, Kai-Lan Hsu, Fa-Chuan Kuan, Wei-Ren Su and Chih-Kai HongSICOT-J, 9 (2023) 36DOI: https://doi.org/10.1051/sicotj/2023035