@article{gurav_2014,  title={Alzheimer's disease and periodontitis - an elusive
               link},  volume={60},  ISSN={0104-4230},  url={https://doi.org/10.1590/1806-9282.60.02.015},  DOI={10.1590/1806-9282.60.02.015},  number={2},  journal={Revista da Associação Médica Brasileira},  publisher={Associação Médica Brasileira},  author={Gurav, Abhijit N.},  year={2014},  pages={173–180} }