@misc{indiciaece2f558b775c,
  title = {Adverse interaction between nifedipine and beta-blockade.},
  author = {L H Opie and D A White},
  year = {1980},
  doi = {10.1136/bmj.281.6253.1462},
  url = {https://pubmed.ncbi.nlm.nih.gov/7437840/},
  note = {Source identifier: 7437840}
}