@misc{indiciaef41ae9a88831,
  title = {An exercise testing program for large populations.},
  author = {L H Hartley and J A Herd and W C Day and J Abusamra and B Howes},
  year = {1979},
  url = {https://pubmed.ncbi.nlm.nih.gov/758530/},
  note = {Source identifier: 758530}
}