@misc{indiciae29618e31511f,
  title = {[Spontaneous pneumoperitoneum in progressive systemic sclerosis (generalized scleroderma)].},
  author = {B Lang and S Meske and P Billmann and P Vaith and H H Peter},
  url = {https://pubmed.ncbi.nlm.nih.gov/3487900/},
  note = {Source identifier: 3487900}
}