@misc{indiciaef8bccce3955e,
  title = {Operation for angina pectoris.},
  author = {H D Friedberg and W D Johnson and G F D'Cunha},
  year = {1968},
  doi = {10.1136/bmj.4.5622.57},
  url = {https://pubmed.ncbi.nlm.nih.gov/5677218/},
  note = {Source identifier: 5677218}
}