@article{graeff_2007,  title={Ansiedade experimental humana},  volume={34},  ISSN={0101-6083},  url={https://doi.org/10.1590/S0101-60832007000500008},  DOI={10.1590/S0101-60832007000500008},  number={5},  journal={Archives of Clinical Psychiatry (São Paulo)},  publisher={Faculdade de Medicina da Universidade de São Paulo},  author={Graeff, Frederico Guilherme},  year={2007},  pages={251–253} }