@misc{indiciae9f4a6047ec72,
  title = {Cardiac dysfunction in hyperthyroidism; a study of 810 cases.},
  author = {D GRISWOLD and J H KEATING},
  year = {1949},
  doi = {10.1016/0002-8703(49)90883-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/15407654/},
  note = {Source identifier: 15407654}
}