@misc{indiciae97efa171d4f9,
  title = {[Stage appropriate therapy for COPD].},
  author = {H Hamm},
  year = {2006},
  doi = {10.1007/s00108-006-1701-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/16900364/},
  note = {Source identifier: 16900364}
}