TY  - RPRT
TI  - Introduction: systemic effects in chronic obstructive pulmonary disease.
AU  - E F M Wouters
PY  - 2003
DO  - 10.1183/09031936.03.00000103a
UR  - https://pubmed.ncbi.nlm.nih.gov/14621100/
ID  - 14621100
ER  -