@misc{indiciae105495612e22,
  title = {Systemic sclerosis (scleroderma). Introduction.},
  author = {C M Black},
  year = {1991},
  doi = {10.1136/ard.50.suppl\_4.837},
  url = {https://pubmed.ncbi.nlm.nih.gov/1750794/},
  note = {Source identifier: 1750794}
}