BRAVO, L. E.; REALPE, J. L.; PORTILLA, H.; PARRA, A. E.; VALENZUELA, N. Environmental duodenitis and gastritis, distribution of Campylobacter piloris and relationship with intragastric pH and nitrite. Colombia Medica, [S. l.], v. 20, n. 4, p. 135–141, 1989. DOI: 10.25100/cm.v20i4.6268. Disponível em: http://colombiamedica.univalle.edu.co/index.php/comedica/article/view/6268. Acesso em: 7 dec. 2025.