Development and external validation of machine learning models for the early prediction of malnutrition in critically ill patients: a prospective observational study. - Yi Liu; Yehua Xu; Lixia Guo; Zhongbin Chen; Xueqin Xia; Feng Chen; Li Tang; Hua Jiang; Caixia Xie (BMC Medical Informatics Decis. Mak., 2025)