@misc{indiciae79693a0606da,
  title = {[Chorea in polycythemia vera].},
  author = {M Friedemann and M Mumenthaler and H Kummer},
  year = {1965},
  doi = {10.1007/bf00243817},
  url = {https://pubmed.ncbi.nlm.nih.gov/5884911/},
  note = {Source identifier: 5884911}
}