TY  - RPRT
TI  - Diagnosing obstructive lung disease. Why is differentiating COPD from asthma important?
AU  - D Subramanian
AU  - K K Guntupalli
PY  - 1994
UR  - https://pubmed.ncbi.nlm.nih.gov/8202424/
ID  - 8202424
ER  -