@misc{indiciae3236c2509c71,
  title = {How important is heart rate?},
  author = {E Thaulow and J E Erikssen},
  year = {1991},
  doi = {10.1097/00004872-199112007-00007},
  url = {https://pubmed.ncbi.nlm.nih.gov/1686457/},
  note = {Source identifier: 1686457}
}