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Dalby, Chris, Tomasz Polanowski, Thomas Larsson, Lars Borgström, Staffan Edsbäcker, und Tim W. Harrison. The Bioavailability and Airway Clearance of the Steroid Component of Budesonide/formoterol and Salmeterol/fluticasone After Inhaled Administration in Patients With COPD and Healthy Subjects: A Randomized Controlled Trial. BioMed Central, 2009.

Dalby, Chris, et al. The Bioavailability and Airway Clearance of the Steroid Component of Budesonide/formoterol and Salmeterol/fluticasone After Inhaled Administration in Patients With COPD and Healthy Subjects: A Randomized Controlled Trial. BioMed Central, 2009.