P. Cheong-Leen J, Mohammednur A, Tune A, Nigussie A, Amiha A, Girma A, Messele GM, d.Z. Silverman B. Post-Operative Pain and Analgesia at the University of Gondar Hospital. Ethiop J Health Biomed Sci [Internet]. 2021 Jul. 14 [cited 2024 Nov. 22];5(1):37-43. Available from: https://journal.uog.edu.et/index.php/EJHBS/article/view/199