@misc{indiciaec91e01195851,
  title = {Paradoxical pulse: 100 years later.},
  author = {H R Wagner},
  year = {1973},
  doi = {10.1016/s0002-9149(73)80090-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/4576557/},
  note = {Source identifier: 4576557}
}