@misc{indiciae21e4707416d3,
  title = {[Risk indicators in coronary surgery].},
  author = {R Fretschner and T Klöss and B Kottler and E M Müller and T Enz},
  year = {1991},
  doi = {10.1055/s-2007-1000577},
  url = {https://pubmed.ncbi.nlm.nih.gov/1932447/},
  note = {Source identifier: 1932447}
}