@misc{indiciae9cbc69f7b417,
  title = {[Bacterial factor in cervical incompetence].},
  author = {I Penev and N Katranushkova and S Ganchev},
  year = {1980},
  url = {https://pubmed.ncbi.nlm.nih.gov/7224050/},
  note = {Source identifier: 7224050}
}