@misc{indiciae531412e0596c,
  title = {[Exertion tests, heart rate and changes in maternal posture].},
  author = {C Domínguez de Costa and P Eisenberg de Smoler and J Armas Domínguez and S Karchmer},
  year = {1977},
  url = {https://pubmed.ncbi.nlm.nih.gov/401053/},
  note = {Source identifier: 401053}
}