Imtiaz, Tashfeen, et al. “IS CHEST TUBE CLAMPING NECESSARY BEFORE REMOVAL?? AN EXPERIENCE WITH 2661 CASES OF TUBE THORACOSTOMIES: Is Chest Tube Clamping Necessary Before Removal?”. Pakistan Armed Forces Medical Journal, vol. 66, no. 4, Aug. 2016, pp. 591-94, https://pafmj.org/PAFMJ/article/view/771.