@misc{indiciae4f83e0476959,
  title = {Systemic oxygen extraction during incremental exercise in patients with severe chronic obstructive pulmonary disease.},
  author = {D A Oelberg and B D Medoff and D H Markowitz and P P Pappagianopoulos and L C Ginns and D M Systrom},
  year = {1998},
  doi = {10.1007/s004210050408},
  url = {https://pubmed.ncbi.nlm.nih.gov/9720997/},
  note = {Source identifier: 9720997}
}