@misc{indiciae814f379c5695,
  title = {Angina prophylaxis by chewable isosorbide dinitrate.},
  author = {H J Semler and H H Orvis},
  year = {1971},
  url = {https://pubmed.ncbi.nlm.nih.gov/4999200/},
  note = {Source identifier: 4999200}
}