TY  - RPRT
TI  - Chronic obstructive pulmonary disease.
AU  - C R Jenkins
AU  - C A Mitchell
PY  - 1997
DO  - 10.5694/j.1326-5377.1989.tb101172.x
UR  - https://pubmed.ncbi.nlm.nih.gov/9315017/
ID  - 9315017
ER  -