@misc{indiciae702e4669a267,
  title = {[External quality assurance in anesthesia].},
  author = {W Heinrichs and H J Baldering and A Köhler},
  year = {1997},
  doi = {10.1055/s-2007-995070},
  url = {https://pubmed.ncbi.nlm.nih.gov/9333332/},
  note = {Source identifier: 9333332}
}