@article{langner_machado_patrício_kawakami_2009,  title={Evaluation of gastric histology in children and adolescents with Helicobacter pylori gastritis using the Update Sydney System},  volume={46},  ISSN={0004-2803},  url={https://doi.org/10.1590/S0004-28032009000400015},  DOI={10.1590/S0004-28032009000400015},  number={4},  journal={Arquivos de Gastroenterologia},  publisher={Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia e Outras Especialidades - IBEPEGE. },  author={Langner, Marini and Machado, Rodrigo S. and Patrício, Francy R. S. and Kawakami, Elisabete},  year={2009},  month={Oct},  pages={328–332} }