@misc{indiciae76128262158d,
  title = {[Primary pulmonary hypertension].},
  author = {Ia A Usviattsev and E M Greditor and L Ia Braginskaia},
  year = {1975},
  url = {https://pubmed.ncbi.nlm.nih.gov/1206980/},
  note = {Source identifier: 1206980}
}