@misc{indiciaecadeec90207c,
  title = {Single umbilical artery.},
  author = {G VanLeeuwen and B Behringer and L Glenn},
  year = {1967},
  doi = {10.1016/s0022-3476(67)80237-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/4951178/},
  note = {Source identifier: 4951178}
}