Rockenbach, M. A. B. C., Pedrollo, I. M., & Maciel, A. C. (2019). Esophageal stricture assessment by esophagogram: A pictorial review of differential diagnosis. Clinical and Biomedical Research, 38(4). Recuperado de https://seer.ufrgs.br/index.php/hcpa/article/view/81439