@misc{indiciae127ce6a18810,
  title = {Valve prostheses and pregnancy.},
  author = {C Oakley},
  year = {1987},
  doi = {10.1136/hrt.58.4.303},
  url = {https://pubmed.ncbi.nlm.nih.gov/3314949/},
  note = {Source identifier: 3314949}
}