@article{gallo_mimura_sugaya_2009,  title={Psychological stress and recurrent aphthous stomatitis},  volume={64},  ISSN={1807-5932},  url={https://doi.org/10.1590/S1807-59322009000700007},  DOI={10.1590/S1807-59322009000700007},  number={7},  journal={Clinics},  publisher={Faculdade de Medicina / USP},  author={Gallo, Camila de Barros and Mimura, Maria Angela Martins and Sugaya, Norberto Nobuo},  year={2009},  pages={645–648} }