TY  - RPRT
TI  - Chronic obstructive pulmonary disease (COPD).
AU  - Barbara B Pope
PY  - 2004
DO  - 10.1097/00152193-200403000-00046
UR  - https://pubmed.ncbi.nlm.nih.gov/15180007/
ID  - 15180007
ER  -