TY  - RPRT
TI  - NO: COPD and beyond.
AU  - A T Jones
AU  - T W Evans
PY  - 1997
DO  - 10.1136/thx.52.2008.s16
UR  - https://pubmed.ncbi.nlm.nih.gov/9381421/
ID  - 9381421
ER  -