Frequency of Various Causes of Upper Gastrointestinal Bleed (UGIB) at a Tertiary Care Hospital. Medical Forum Monthly, [S. l.], v. 23, n. 05, 2024. Disponível em: https://medicalforummonthly.com/index.php/mfm/article/view/444.. Acesso em: 25 sep. 2025.