@misc{indiciae903dd33510fa,
  title = {The inverted U wave.},
  author = {S R ELEK},
  year = {1958},
  doi = {10.1378/chest.34.6.644},
  url = {https://pubmed.ncbi.nlm.nih.gov/13597757/},
  note = {Source identifier: 13597757}
}