@article{penna_penna_2012,  title={Leprosy frequency in the world, 1999-2010},  volume={107},  ISSN={0074-0276},  url={https://doi.org/10.1590/S0074-02762012000900002},  DOI={10.1590/S0074-02762012000900002},  journal={Memórias do Instituto Oswaldo Cruz},  publisher={Instituto Oswaldo Cruz, Ministério da Saúde},  author={Penna, Maria Lúcia Fernandes and Penna, Gerson Oliveira},  year={2012},  month={Dec},  pages={3–12} }