@misc{indiciae2bde27403291,
  title = {Early interventions in CF.},
  author = {Felix Ratjen},
  year = {2004},
  doi = {10.1002/ppul.70063},
  url = {https://pubmed.ncbi.nlm.nih.gov/15029609/},
  note = {Source identifier: 15029609}
}