Majeed, Farhan Ahmed, et al. “CLINICAL ASSESSMENT COMPARED WITH CHEST-X-RAY AFTER REMOVAL OF CHEST TUBE TO DIAGNOSE PNEUMOTHORAX: Removal of Chest Tube to Diagnose Pneumothorax”. Pakistan Armed Forces Medical Journal, vol. 67, no. 4, Aug. 2017, pp. 641-45, https://pafmj.org/PAFMJ/article/view/743.