@misc{indiciaec92412dc6853,
  title = {Mitral stenosis.},
  author = {S B Roy and N Gopinath},
  year = {1968},
  doi = {10.1161/01.cir.38.1s5.v-68},
  url = {https://pubmed.ncbi.nlm.nih.gov/4889600/},
  note = {Source identifier: 4889600}
}