@misc{indiciae544ad4c43d97,
  title = {Beta-blockade and left ventricular performance under halothane anesthesia.},
  author = {C Prys-Roberts and P Foëx},
  year = {1973},
  doi = {10.1093/bja/45.1.121},
  url = {https://pubmed.ncbi.nlm.nih.gov/4144499/},
  note = {Source identifier: 4144499}
}