@article{escosteguy_1999,  title={Methodological and statistical topics in randomized controlled clinical trials},  volume={72},  ISSN={0066-782X},  url={https://doi.org/10.1590/S0066-782X1999000200002},  DOI={10.1590/S0066-782X1999000200002},  number={2},  journal={Arquivos Brasileiros de Cardiologia},  publisher={Sociedade Brasileira de Cardiologia - SBC},  author={Escosteguy, Claudia Caminha},  year={1999},  month={Feb},  pages={139–143} }