Crocetti, Daniele, et al. “Pneumothorax: A Rare Complication of Colonoscopy. A Systematic Review of Literature”. Annali Italiani Di Chirurgia, vol. 90, no. 3, May 2019, pp. 201-7, https://annaliitalianidichirurgia.it/index.php/aic/article/view/1216.