@misc{indiciae7f332354d381,
  title = {Placental insufficiency--a questionable concept.},
  author = {P Gruenwald},
  year = {1974},
  doi = {10.1136/adc.49.12.915},
  url = {https://pubmed.ncbi.nlm.nih.gov/4475573/},
  note = {Source identifier: 4475573}
}