ZAHID ULLAH, M.; SHAH, S. A.; KHAN, Z. A.; IRSHAD, K. Transthoracic Heller’s Myotomy for Achalasia of Cardia Experience with 28 Patients. Journal of Postgraduate Medical Institute, [S. l.], v. 12, n. 1, 2011. Disponível em: https://jpmi.org.pk/index.php/jpmi/article/view/601. Acesso em: 8 may. 2024.