@misc{indiciae37a0ae5a04d9,
  title = {Letter: Continuous blood-sampling.},
  author = {P Koninckx and P De Moor and I Brosens},
  year = {1974},
  doi = {10.1016/s0140-6736(74)91243-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/4137761/},
  note = {Source identifier: 4137761}
}