@misc{indiciaec7a9866837ef,
  title = {Methodological variation in systolic time intervals.},
  author = {J Mustonen and M Uusitupa and K Selkäinaho and E Läsimies},
  year = {1984},
  doi = {10.1111/j.1475-097x.1984.tb00233.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/6539188/},
  note = {Source identifier: 6539188}
}