Beta-blocker administration within 24 hours after admission to the intensive care unit and mortality in critical heart failure patients: a retrospective analysis from the MIMIC-IV database - Xie, Linfeng; Chen, Jing; Li, Yuanzhu; Liu, Gang; Shen, Jian; Li, Xiang; Yang, Yuan; Chen, Yintao; Luo, Suxin; Huang, Bi (Frontiers in Pharmacology, 2025)