@misc{indiciae827a368fa74d,
  title = {[Initial lesion in gingivitis ulcerosa].},
  author = {K H Rateitschak and E Plüss},
  year = {1972},
  url = {https://pubmed.ncbi.nlm.nih.gov/4557286/},
  note = {Source identifier: 4557286}
}