RAHMAN, M. ur; RAHMAN, S. ur; UL IMAN, N.; KHAN, T. M. Aetiology of upper Gastrointestinal Haemorrhage in Medical ward. Journal of Postgraduate Medical Institute, [S. l.], v. 14, n. 2, 2011. Disponível em: https://www.jpmi.org.pk/index.php/jpmi/article/view/697. Acesso em: 3 may. 2024.