@misc{indiciae149329d5b5a8,
  title = {Fixed membranous subaortic stenosis.},
  author = {I Kronzon and M Schloss and D Danilowicz and A Singh},
  year = {1975},
  doi = {10.1378/chest.67.4.473},
  url = {https://pubmed.ncbi.nlm.nih.gov/1168116/},
  note = {Source identifier: 1168116}
}