Mureddu, Gian Francesco, Pompilio Faggiano, and Francesco Fattirolli. “Preoperative Evaluation before Non Cardiac Surgery in Subjects Older Than 65 Years”. Monaldi Archives for Chest Disease 82, no. 1 (August 19, 2015). Accessed March 29, 2024. https://www.monaldi-archives.org/macd/article/view/39.