@misc{indiciae6bd45884e4c8,
  title = {Multicenter randomized, controlled trial of a preterm birth prevention program. Collaborative Group on Preterm Birth Prevention.},
  year = {1993},
  doi = {10.1016/0002-9378(93)90087-y},
  url = {https://pubmed.ncbi.nlm.nih.gov/8362947/},
  note = {Source identifier: 8362947}
}