@misc{indiciaef14a0abcfde9,
  title = {Preterm delivery: a risk factor for retained placenta.},
  author = {R Romero and Y C Hsu and A P Athanassiadis and Z Hagay and C Avila and J Nores and A Roberts and M Mazor and J C Hobbins},
  year = {1990},
  doi = {10.1016/0002-9378(90)91076-o},
  url = {https://pubmed.ncbi.nlm.nih.gov/2403163/},
  note = {Source identifier: 2403163}
}