@misc{indiciae7d589abe9e3e,
  title = {[Causal proceeding in chronic obstructive pulmonary disease].},
  author = {Andrzej Chciałowski and Wojciech Lubiński},
  year = {2004},
  url = {https://pubmed.ncbi.nlm.nih.gov/15524021/},
  note = {Source identifier: 15524021}
}