@misc{indiciae02d4b20edfc9,
  title = {Pregnancy and immunity.},
  author = {G M Stirrat},
  year = {1994},
  doi = {10.1136/bmj.308.6941.1385},
  url = {https://pubmed.ncbi.nlm.nih.gov/8019246/},
  note = {Source identifier: 8019246}
}