@misc{indiciae6311913032d4,
  title = {Cardiovascular preop evaluation.},
  author = {K Balasaraswathi and A A El-Etr},
  year = {1976},
  doi = {10.1016/s0001-2092(07)60909-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/1044260/},
  note = {Source identifier: 1044260}
}