@article{ribeiro_sevalho_césar_2006,  title={The use of nonsteroidal anti-inflammatory drugs and the occurrence of gastric lesions among patients undergoing upper endoscopy in a university hospital in Brazil},  volume={61},  ISSN={1807-5932},  url={https://doi.org/10.1590/S1807-59322006000500007},  DOI={10.1590/S1807-59322006000500007},  number={5},  journal={Clinics},  publisher={Faculdade de Medicina / USP},  author={Ribeiro, Andreia Queiroz and Sevalho, Gil and César, Cibele Comini},  year={2006},  month={Oct},  pages={409–416} }