MENGISTIE, Y. C. Dr. The pattern and outcome of upper gastrointestinal bleeding at St. Paul’s Millenium Medical College, Addis Ababa, Ethiopia. Ethiopian Medical Journal, [S. l.], v. 58, n. 04, 2020. Disponível em: https://www.emjema.org/index.php/EMJ/article/view/1360. Acesso em: 2 apr. 2026.