Vaidya, S., R. M. Karmacharya, B. Shrestha, M. Adhikari, R. Sharma, S. Khadka, N. Bhandari, and G. Hada. “Comparative Study Between the Use of Pigtail Catheters and Traditional Chest Tube Drain in Cases With Pneumothorax”. Kathmandu University Medical Journal, vol. 20, no. 1, Mar. 2022, pp. 24-28, doi:10.3126/kumj.v20i1.49829.