@misc{indiciae0124050099d8,
  title = {"Refractory" coronary artery spasm.},
  author = {F A Heupler},
  year = {1992},
  doi = {10.1002/clc.4960150315},
  url = {https://pubmed.ncbi.nlm.nih.gov/1551257/},
  note = {Source identifier: 1551257}
}