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COPD.S53676
COPD.S53676
http://dx.doi.org/10.2147/COPD.S53676
The association of chronic obstructive pulmonary disease, disability, engagement in social activities, and mortality among US adults aged 70 years or older, 1994-2006
P356
Q37495513-7708332E-2F04-4ACA-89DB-979BDE292E31
P356
COPD.S53676
http://dx.doi.org/10.2147/COPD.S53676