@misc{indiciaeb134595202a8,
  title = {The fetal electrocardiogram.},
  author = {W J van Wijngaarden and D K James and E M Symonds},
  year = {1996},
  doi = {10.1016/s0950-3552(96)80038-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/8836485/},
  note = {Source identifier: 8836485}
}