@misc{indiciae3e231663b2f6,
  title = {Variant angina pectoris.},
  author = {H Hilal and R Massumi},
  year = {1967},
  doi = {10.1016/0002-9149(67)90440-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/6021282/},
  note = {Source identifier: 6021282}
}