Bhattarai, B, and S Shrestha. “Negative Pressure Pulmonary Edema- Case Series and Review of Literature”. Kathmandu University Medical Journal 9, no. 4 (June 18, 2012): 310–314. Accessed May 6, 2024. https://www.nepjol.info/index.php/KUMJ/article/view/6352.