@article{bandeira_griz_dreyer_eufrazino_bandeira_freese_2006,  title={Vitamin D deficiency: a global perspective},  volume={50},  ISSN={0004-2730},  url={https://doi.org/10.1590/S0004-27302006000400009},  DOI={10.1590/S0004-27302006000400009},  number={4},  journal={Arquivos Brasileiros de Endocrinologia & Metabologia},  publisher={Sociedade Brasileira de Endocrinologia e Metabologia},  author={Bandeira, Francisco and Griz, Luiz and Dreyer, Patricia and Eufrazino, Catia and Bandeira, Cristina and Freese, Eduardo},  year={2006},  month={Aug},  pages={640–646} }