@misc{indiciae033c252d0835,
  title = {Lung volume reduction surgery for severe emphysema.},
  author = {S Demertzis and H Wilkens and M Lindenmeir and T Graeter and H J Schäfers},
  year = {1998},
  url = {https://pubmed.ncbi.nlm.nih.gov/9972913/},
  note = {Source identifier: 9972913}
}