@misc{indiciaeaf0d848b4d95,
  title = {Perceived difficulty, importance, and satisfaction with physical function in COPD patients.},
  author = {Jeffrey A Katula and W Jack Rejeski and Katie L Wickley and Michael J Berry},
  year = {2004},
  doi = {10.1186/1477-7525-2-18},
  url = {https://pubmed.ncbi.nlm.nih.gov/15056389/},
  note = {Source identifier: 15056389}
}