@misc{indiciae71d8434abf4e,
  title = {[Differential diagnostic difficulties in soft chancre].},
  author = {P M Zorin and S P Zorin and A N Bardetskiĭ and G I Dudarenko and L K Cherepanova},
  year = {1982},
  url = {https://pubmed.ncbi.nlm.nih.gov/7180198/},
  note = {Source identifier: 7180198}
}