@misc{indiciae71d5416fb8a3,
  title = {Lung involvement in rheumatoid factor-negative arthritis.},
  author = {O Scherak and G Kolarz and W Popp and A Wottawa and L Ritschka and O Braun},
  year = {1993},
  doi = {10.3109/03009749309095127},
  url = {https://pubmed.ncbi.nlm.nih.gov/8235492/},
  note = {Source identifier: 8235492}
}