REHMAN, M. A.; KHAN, I. U.; SHAH, M. S. Clinical Features and Endoscopic findings in Peptic Ulcer. Journal of Postgraduate Medical Institute, [S. l.], v. 12, n. 1, 2011. Disponível em: https://jpmi.org.pk/index.php/jpmi/article/view/600. Acesso em: 3 may. 2024.