@misc{indiciaeffa1dc535e86,
  title = {The exercise electrocardiogram in diagnosis.},
  author = {H Blackburn},
  year = {1977},
  doi = {10.1159/000169853},
  url = {https://pubmed.ncbi.nlm.nih.gov/890702/},
  note = {Source identifier: 890702}
}