@misc{indiciaebcac9af0592a,
  title = {Circannual changes in ventricular function assessed by echocardiography.},
  author = {Y Saito and K Tamura and D C Hillman and G Cornélissen and F Halberg},
  url = {https://pubmed.ncbi.nlm.nih.gov/1628522/},
  note = {Source identifier: 1628522}
}