@misc{indiciae469e3e6b08d5, title = {Subgingival microflora and periodontitis.}, author = {B L Williams and R M Pantalone and J C Sherris}, year = {1976}, doi = {10.1111/j.1600-0765.1976.tb00045.x}, url = {https://pubmed.ncbi.nlm.nih.gov/130475/}, note = {Source identifier: 130475} }