@misc{indiciaeefbfb3d53457,
  title = {[Supravalvular ring in the left atrium].},
  author = {H Kalkowski and D Oldag and H M Stubbe},
  year = {1984},
  url = {https://pubmed.ncbi.nlm.nih.gov/6495911/},
  note = {Source identifier: 6495911}
}