@misc{indiciaeba76ee074005,
  title = {Standing at work and preterm delivery.},
  author = {J J Morrison and P J O'Brien},
  year = {1995},
  doi = {10.1111/j.1471-0528.1995.tb10893.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/8534639/},
  note = {Source identifier: 8534639}
}