@article{hern_1991,  title={Health and demography of native Amazonians: historical perspective and current status},  volume={7},  ISSN={0102-311X},  url={https://doi.org/10.1590/S0102-311X1991000400002},  DOI={10.1590/S0102-311X1991000400002},  number={4},  journal={Cadernos de Saúde Pública},  publisher={Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz},  author={Hern, Warren M.},  year={1991},  month={Oct},  pages={451–480} }