@misc{indiciae5e71618d3a51,
  title = {Rheumatoid factor and pregnancy.},
  author = {M Vejtorp},
  year = {1979},
  doi = {10.1016/s0140-6736(79)90615-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/84237/},
  note = {Source identifier: 84237}
}