@misc{indiciaefacfeb6977ca,
  title = {Hereditary protein S deficiency.},
  author = {R M Bertina},
  year = {1985},
  doi = {10.1159/000215155},
  url = {https://pubmed.ncbi.nlm.nih.gov/2931333/},
  note = {Source identifier: 2931333}
}