TY  - GEN
AU  - Langer,D
AU  - Pitta,F
AU  - Troosters,T
AU  - Burtin,C
AU  - Decramer,M
AU  - Gosselink,R
TI  - Quantifying physical activity in COPD: different measures for different purposes
SN  - 1468-3296
PY  - 2009///0618
KW  - Exercise
KW  - physiology
KW  - Humans
KW  - Leg
KW  - Pulmonary Disease, Chronic Obstructive
KW  - physiopathology
N1  - Publication Type: Comment; Letter
ER  -