@misc{indiciae996e49e107e4,
  title = {Progressive systemic sclerosis presenting with spontaneous pneumothorax.},
  author = {B Lang and H Ortlieb and S Meske and G Hauke and H H Peter},
  year = {1989},
  url = {https://pubmed.ncbi.nlm.nih.gov/2746577/},
  note = {Source identifier: 2746577}
}