@misc{indiciae037d43abfb5b,
  title = {[Obstetrical problems in drug abuse].},
  author = {K J Beck and F J Zumbé and P S Schönhöfer},
  year = {1974},
  url = {https://pubmed.ncbi.nlm.nih.gov/4437439/},
  note = {Source identifier: 4437439}
}