@misc{indiciaec0d223c0788b,
  title = {Progressive systemic sclerosis.},
  author = {D Alarcón-Segovia},
  year = {1978},
  doi = {10.7326/0003-4819-88-5-720},
  url = {https://pubmed.ncbi.nlm.nih.gov/646277/},
  note = {Source identifier: 646277}
}