RAY-OFFOR, Emeka; OBIORAH, Christopher. Upper Gastro-Intestinal Endoscopy in Port-Harcourt: An Audit. The Nigerian Health Journal, [S. l.], v. 13, n. 4, p. 192, 2015. Disponível em: https://tnhjph.com/index.php/tnhj/article/view/119. Acesso em: 28 apr. 2024.