@article{medina_hurtig_san sebastián_quizhpe_romero_2008,  title={Dental caries in 6-12-year-old indigenous and non-indigenous schoolchildren in the Amazon basin of Ecuador},  volume={19},  ISSN={0103-6440},  url={https://doi.org/10.1590/S0103-64402008000100015},  DOI={10.1590/S0103-64402008000100015},  number={1},  journal={Brazilian Dental Journal},  publisher={Fundação Odontológica de Ribeirão Preto},  author={Medina, Widman and Hurtig, Anna-Karin and San Sebastián, Miguel and Quizhpe, Edy and Romero, Cristian},  year={2008},  pages={83–86} }