@article{vieira_kunii_nishida_2006,  title={Evolution of PTH assays},  volume={50},  ISSN={0004-2730},  url={https://doi.org/10.1590/S0004-27302006000400007},  DOI={10.1590/S0004-27302006000400007},  number={4},  journal={Arquivos Brasileiros de Endocrinologia & Metabologia},  publisher={Sociedade Brasileira de Endocrinologia e Metabologia},  author={Vieira, José Gilberto H. and Kunii, Ilda and Nishida, Sônia},  year={2006},  month={Aug},  pages={621–627} }