@misc{indiciae5321ee800f2c,
  title = {[Placenta biopsy].},
  author = {D Gerl and J Kadner and G Ehrhardt and C Estel and K P Kreuziger},
  year = {1973},
  url = {https://pubmed.ncbi.nlm.nih.gov/4697129/},
  note = {Source identifier: 4697129}
}