@article{ratin_orso_2015,  title={Minimal endoscopic changes in non-erosive reflux disease},  volume={28},  ISSN={0102-6720},  url={https://doi.org/10.1590/S0102-67202015000100006},  DOI={10.1590/S0102-67202015000100006},  number={1},  journal={ABCD. Arquivos Brasileiros de Cirurgia Digestiva (São Paulo)},  publisher={Colégio Brasileiro de Cirurgia Digestiva},  author={RATIN, Ana Carolina Ferreira and ORSO, Ivan Roberto Bonotto},  year={2015},  pages={20–23} }