1.
Singu B, Verbeeck RK. Should Codeine Still be Considered a WHO Essential Medicine?. J Pharm Pharm Sci [Internet]. 2021 Jun. 26 [cited 2026 Feb. 9];24(3):329-35. Available from: https://journals.library.ualberta.ca/jpps/index.php/JPPS/article/view/31639