1. Capelle, L. G., de Vries, A. C., Haringsma, J., Ter Borg, F., de Vries, R. A., Bruno, M. J., et al. (2010). The staging of gastritis with the OLGA system by using intestinal metaplasia as an accurate alternative for atrophic gastritis. Gastrointestinal Endoscopy, 71, 1150–1158.
2. Dixon, M. F., Genta, R. M., Yardley, J. H., & Correa, P. (1996). Classification and grading of gastritis. The updated Sydney System. International Workshop on the Histopathology of Gastritis, Houston 1994. The American Journal of Surgical Pathology, 20(10), 1161–1181.
3. Odze, R. D., & Goldblum, J. R. (2009). Surgical pathology of the GI tract, liver, biliary tract, and pancreas (2nd ed.). Philadelphia: Saunders/Elsevier.
4. Rocha, G. A., Queiroz, D. M., Mendes, E. N., Barbosa, A. J., Lima Junior, G. F., & Oliveira, C. A. (1991). Helicobacter pylori acute gastritis: Histological, endoscopical, clinical, and therapeutic features. The American Journal of Gastroenterology, 86(11), 1592–1595.
5. Rugge, M., & Genta, R. M. (2005). Staging and grading of chronic gastritis. Human Pathology, 36(3), 228–233.