TY  - RPRT
TI  - Chronic obstructive pulmonary disease. Current concepts and therapeutic approaches.
AU  - N J Gross
PY  - 1990
DO  - 10.1378/chest.97.2.19s
UR  - https://pubmed.ncbi.nlm.nih.gov/2404708/
ID  - 2404708
ER  -