@misc{indiciae73dcc8387595,
  title = {Stres as a predisposing factor in necrotizing ulcerative gingivitis.},
  author = {I L Shannon and W G Kilgore and T J O'Leary},
  year = {1969},
  doi = {10.1902/jop.1969.40.4.240},
  url = {https://pubmed.ncbi.nlm.nih.gov/5253993/},
  note = {Source identifier: 5253993}
}