TY  - RPRT
TI  - Spirometry in chronic obstructive pulmonary disease.
AU  - Patrick J P Poels
AU  - Tjard R J Schermer
AU  - Chris van Weel
AU  - Peter M A Calverley
PY  - 2006
DO  - 10.1136/bmj.38987.478727.80
UR  - https://pubmed.ncbi.nlm.nih.gov/17068018/
ID  - 17068018
ER  -