@article{sgarbi_2018,  title={Region-specific reference intervals for TSH in pregnancy: time for changes in Brazil},  volume={62},  ISSN={2359-3997},  url={https://doi.org/10.20945/2359-3997000000067},  DOI={10.20945/2359-3997000000067},  number={4},  journal={Archives of Endocrinology and Metabolism},  publisher={Sociedade Brasileira de Endocrinologia e Metabologia},  author={Sgarbi, José Augusto},  year={2018},  month={Jul},  pages={383–385} }