FAHIM, M. .; SOHAIL, M. .; SAJJAD KHAN, M.; KHAN, F. U. .; UR RASHID, S. .; AKHTER, S. . Frequency of Bleeding Duodenal Ulcer in Patients Presenting with Upper Gastrointestinal Bleeding: Frequency of Duodenal Ulcer in patients with Gastrointestinal Bleeding. Pakistan Journal of Health Sciences, Pakistan, v. 3, n. 06, p. 88–92, 2022. DOI: 10.54393/pjhs.v3i06.308. Disponível em: https://thejas.com.pk/index.php/pjhs/article/view/308. Acesso em: 28 feb. 2024.