@misc{indiciae0952f19d656c,
  title = {[X-ray study in prolapsed mitral valve].},
  author = {L S Matveeva and I T Kitaeva and P F Petrovskiĭ},
  url = {https://pubmed.ncbi.nlm.nih.gov/6231766/},
  note = {Source identifier: 6231766}
}