Hamidine I, Maman Brah M, Issa H, Ousseini F, Garba A, Elh Lamine H, et al. Contribution of upper gastrointestinal endoscopy in exploration of upper gastrointestinal hemorrhages in Zinder, Niger Republic. J Sah Sci Santé [Internet]. 2023 Jun. 30 [cited 2026 Oct. 14];3(1):393-9. Available from: https://www.j3s-fss-uas.org/index.php/jsss/article/view/62