@misc{indiciaeceb8debd2306,
  title = {[Spiroergometry. Indications, methods, relevance].},
  author = {H W Breuer},
  year = {1997},
  doi = {10.1055/s-2008-1047636},
  url = {https://pubmed.ncbi.nlm.nih.gov/9138923/},
  note = {Source identifier: 9138923}
}