@article{lotufo_2008,  title={Clinical trial registration: now required},  volume={22},  ISSN={1806-8324},  url={https://doi.org/10.1590/S1806-83242008000200001},  DOI={10.1590/S1806-83242008000200001},  number={2},  journal={Brazilian Oral Research},  publisher={Sociedade Brasileira de Pesquisa Odontológica - SBPqO},  author={Lotufo, Mônica Andrade},  year={2008},  month={Apr},  pages={99–99} }