@misc{indiciae38e2ed4d9074,
  title = {Constriction ring dystocia.},
  author = {C FIELDS},
  year = {1953},
  doi = {10.1016/0002-9378(53)90619-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/13040413/},
  note = {Source identifier: 13040413}
}