Smoking cessation in chronic obstructive pulmonary disease
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PII: S0954-6111(09)00065-1
doi:10.1016/j.rmed.2009.02.013
© 2009 Elsevier Ltd. All rights reserved.
PII: S0954-6111(09)00065-1
doi:10.1016/j.rmed.2009.02.013
© 2009 Elsevier Ltd. All rights reserved.