@misc{indiciae8daa95922b4a,
  title = {Nitroglycerin for angina pectoris.},
  author = {H W Copelan},
  year = {1978},
  doi = {10.1001/jama.239.22.2340c},
  url = {https://pubmed.ncbi.nlm.nih.gov/417197/},
  note = {Source identifier: 417197}
}