The efficacy and safety of300 mg bid ranitidine in treatment of duodena/ ulcer . Annals of Medical Research, [S. l.], v. 1, n. 2, p. 0108–0111, 2021. Disponível em: http://www.annalsmedres.org/index.php/aomr/article/view/2333. Acesso em: 9 may. 2025.