Pais, Carmen Tavares, Rita Carneiro Silva, Teresa Gomes, and Sónia Carvalho. “A Case of Tracheomalacia in Chronic Obstructive Pulmonary Disease: What Went Wrong?”. European Journal of Case Reports in Internal Medicine 5, no. 7 (May 31, 2018). Accessed November 4, 2026. https://ejcrim.com/index.php/ejcrim/article/view/906.