@misc{indiciaef78c79af890f,
  title = {Practolol in angina pectoris: a double-blind ergometric study.},
  author = {H Bäckman and T Martikainen},
  year = {1974},
  url = {https://pubmed.ncbi.nlm.nih.gov/4217578/},
  note = {Source identifier: 4217578}
}