@misc{indiciaef9a8f4d9b894,
  title = {Slow channel blockers.},
  author = {J O Covinsky and S C Hamburger},
  year = {1983},
  doi = {10.1097/00007611-198301000-00016},
  url = {https://pubmed.ncbi.nlm.nih.gov/6337401/},
  note = {Source identifier: 6337401}
}