@misc{indiciae9820ececc306,
  title = {Proposal for a European COPD network.},
  author = {F Smeets},
  year = {1990},
  doi = {10.1007/bf02718172},
  url = {https://pubmed.ncbi.nlm.nih.gov/2117157/},
  note = {Source identifier: 2117157}
}