@misc{indiciaed0216132b214,
  title = {Left ventricular function in marathon runners: echocardiographic assessment.},
  author = {W Paulsen and D R Boughner and P Ko and D A Cunningham and J A Persaud},
  year = {1981},
  doi = {10.1152/jappl.1981.51.4.881},
  url = {https://pubmed.ncbi.nlm.nih.gov/7298433/},
  note = {Source identifier: 7298433}
}