Outcome of pneumatic balloon dilatation of lower oesophageal sphincter of oesophagus of patients suffering from achalasia cardia. Bangladesh Medical Journal, [S. l.], v. 44, n. 2, p. 76–81, 2016. DOI: 10.3329/bmj.v44i2.27242. Disponível em: https://banglajol.info/index.php/BMJ/article/view/27242. Acesso em: 30 jun. 2026.