Comparative Analysis of Four Scoring Systems (APACHE II, CURB-65, Pneumonia Severity Index [PSI], and CHA2DS2-VASc) for Predicting New-Onset Cardiovascular Events, Including Atrial Fibrillation, in Critically Ill Patients with Pneumonia https://www.medrxiv.org/content/10.1101/2023.07.12.23292480