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Chavannesa, Niels H., Marlous Grijsen, Marjan van den Akker, Huub Schepers, Maddy Nijdam, Brian Tiep, ja Jean Muris. "Integrated Disease Management Improves One-year Quality of Life in Primary Care COPD Patients: A Controlled Clinical Trial." Prim Care Respir J 2009.

Chavannesa, Niels H., et al. "Integrated Disease Management Improves One-year Quality of Life in Primary Care COPD Patients: A Controlled Clinical Trial." Prim Care Respir J 2009.