@misc{indiciae0a2daacb1725,
  title = {[Keratinization and toothbrushing: histological study].},
  author = {C Hirsch and G Cimasoni and A J Held},
  year = {1967},
  url = {https://pubmed.ncbi.nlm.nih.gov/4167224/},
  note = {Source identifier: 4167224}
}