Garg S, Govindaraj V, Dwivedi DP, Raja K, Theerthar EP. Postoperative pulmonary complications in patients undergoing upper abdominal surgery: risk factors and predictive models. Monaldi Arch Chest Dis [Internet]. 2024 Mar. 25 [cited 2024 Nov. 22];. Available from: https://www.monaldi-archives.org/macd/article/view/2915