@misc{indiciae97b2301aeefe,
  title = {Nitroglycerin ointment: a review.},
  author = {G S Francis and A D Hagan},
  year = {1977},
  doi = {10.1177/000331977702801208},
  url = {https://pubmed.ncbi.nlm.nih.gov/414640/},
  note = {Source identifier: 414640}
}