@misc{indiciae657e283974a1,
  title = {Administering calcium-channel blocking agents.},
  author = {J C Hartshorn},
  doi = {10.1097/00003465-198303000-00001},
  url = {https://pubmed.ncbi.nlm.nih.gov/6551244/},
  note = {Source identifier: 6551244}
}