Frequency and Risk Factors of Postoperative Pulmonary Complications after Major Abdominal Surgery: A Prospective Observational Study at Hayatabad Medical Complex Peshawar. Pjmcr [Internet]. 2026 Mar. 25 [cited 2026 Sep. 25];5(1):4162-77. Available from: https://pakjmcr.com/index.php/1/article/view/1550