AHAD, M. A. Endoscopic Evaluation of Achalasia Cardia. TAJ: Journal of Teachers Association, [S. l.], v. 20, n. 2, 2009. DOI: 10.3329/taj.v20i2.3066. Disponível em: https://banglajol.info/index.php/TAJ/article/view/3066. Acesso em: 27 sep. 2024.