1.
Ray-Offor E, Obiorah C. Upper Gastro-Intestinal Endoscopy in Port-Harcourt: An Audit. TNHJ [Internet]. 2015 Dec. 13 [cited 2026 Jul. 28];13(4):192. Available from: https://tnhjph.com/index.php/tnhj/article/view/119