@article{oppermann_weidlich_musskopf_2012,  title={Periodontal disease and systemic complications},  volume={26},  ISSN={1806-8324},  url={https://doi.org/10.1590/S1806-83242012000700007},  DOI={10.1590/S1806-83242012000700007},  number={spe1},  journal={Brazilian Oral Research},  publisher={Sociedade Brasileira de Pesquisa Odontológica - SBPqO},  author={Oppermann, Rui Vicente and Weidlich, Patricia and Musskopf, Marta Liliana},  year={2012},  pages={39–47} }