@misc{indiciae1db1833d52f0,
  title = {[Exercise electrocardiogram in children].},
  author = {J Swiderski and T Materska-Radziwoń and E Weicher-Kulikowska and E Margiewicz and E Oknińska and J Tylińska},
  year = {1979},
  url = {https://pubmed.ncbi.nlm.nih.gov/523203/},
  note = {Source identifier: 523203}
}