@misc{indiciae8fc0eefc86c9,
  title = {Ultrasonic placentography.},
  author = {B Sundén},
  year = {1969},
  doi = {10.3109/00016346909157739},
  url = {https://pubmed.ncbi.nlm.nih.gov/5380818/},
  note = {Source identifier: 5380818}
}