@misc{indiciaead6c53a96e29,
  title = {[Bed ergometer for clinical e.g. postoperative use].},
  author = {P O ASTRAND and B EYRICH},
  year = {1952},
  url = {https://pubmed.ncbi.nlm.nih.gov/13015489/},
  note = {Source identifier: 13015489}
}