@misc{indiciaed8a0904d66d1,
  title = {Prolonged left ventricular ejection time in the post-premature beat. A sensitive sign of idiopathic hypertrophic subaortic stenosis.},
  author = {C W White and T J Zimmerman},
  year = {1975},
  doi = {10.1161/01.cir.52.2.306},
  url = {https://pubmed.ncbi.nlm.nih.gov/50155/},
  note = {Source identifier: 50155}
}