Developing a Machine Learning Model for Predicting 30-Day Major Adverse Cardiac and Cerebrovascular Events in Patients Undergoing Noncardiac Surgery: Retrospective Study. - Kwun, Ju-Seung; Ahn, Houng-Beom; Kang, Si-Hyuck; Yoo, Sooyoung; Kim, Seok; Song, Wongeun; Hyun, Junho; Oh, Ji Seon; Baek, Gakyoung; Suh, Jung-Won (Journal of Medical Internet Research, 2025)