@misc{indiciae12d3baaab3cd,
  title = {Congenital mitral stenosis.},
  author = {S P Singh and M S Gotsman and L D Abrams and R Astley and C G Parsons and K D Roberts},
  year = {1967},
  doi = {10.1136/hrt.29.1.83},
  url = {https://pubmed.ncbi.nlm.nih.gov/6018323/},
  note = {Source identifier: 6018323}
}