@misc{indiciae73101508152b,
  title = {Ulcerative colitis and pregnancy.},
  author = {C P Willoughby and S C Truelove},
  year = {1980},
  doi = {10.1136/gut.21.6.469},
  url = {https://pubmed.ncbi.nlm.nih.gov/6107262/},
  note = {Source identifier: 6107262}
}