@article{alves_2021,  title={Importance of esophageal pH monitoring and manometry in indicating surgical treatment of gastroesophageal reflux disease},  volume={67},  ISSN={0104-4230},  url={https://doi.org/10.1590/1806-9282.67.01.20200354},  DOI={10.1590/1806-9282.67.01.20200354},  number={1},  journal={Revista da Associação Médica Brasileira},  publisher={Associação Médica Brasileira},  author={Alves, José Roberto},  year={2021},  month={Jan},  pages={131–139} }