@misc{indiciae2cb50659cf79,
  title = {The first heartbeats.},
  author = {J D EBERT},
  year = {1959},
  doi = {10.1038/scientificamerican0359-87},
  url = {https://pubmed.ncbi.nlm.nih.gov/13635039/},
  note = {Source identifier: 13635039}
}