@article{paumgartten_2021,  title={Equipoise, placebo in clinical trials and Brazilian Code of Medical Ethics},  volume={67},  ISSN={0104-4230},  url={https://doi.org/10.1590/1806-9282.20200929},  DOI={10.1590/1806-9282.20200929},  number={4},  journal={Revista da Associação Médica Brasileira},  publisher={Associação Médica Brasileira},  author={Paumgartten, Francisco José Roma},  year={2021},  month={Apr},  pages={490–495} }