@misc{indiciaeeff1c689d2dd,
  title = {The single umbilical artery.},
  author = {J J Cogswell},
  year = {1974},
  doi = {10.1111/j.1469-8749.1974.tb02716.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/4855930/},
  note = {Source identifier: 4855930}
}