@misc{indiciaea5dba73a91ba,
  title = {[Apex cardiography in hyperthyroidism].},
  author = {G A Zuckermann and G Knappe},
  year = {1969},
  url = {https://pubmed.ncbi.nlm.nih.gov/5363190/},
  note = {Source identifier: 5363190}
}