@article{silvestre_silvestre-rangil_bagan_bagan_2016, 
  title={Effect of nonsurgical periodontal treatment in patients with periodontitis and rheumatoid arthritis: A systematic review}, 
  DOI={10.4317/medoral.20974}, 
  publisher={Medicina Oral, S.L.}, 
  author={Silvestre and Silvestre-Rangil and Bagan and Bagan}, 
  year={2016}
  }