@misc{indiciae8a4293c69aed,
  title = {[Clinical picture of rheumatoid arthritis after the age of 60].},
  author = {M Koperska and I Zimmermann-Górska},
  year = {1976},
  url = {https://pubmed.ncbi.nlm.nih.gov/60756/},
  note = {Source identifier: 60756}
}