1. Recent asthma or COPD exacerbation (as judged by the clinician) due to respiratory infection within the last month

2. Relevant seasonal allergen exposure within 4 weeks or within the course of the study

3. Treatment with prednisone or antibiotics or hospitalisation within the past 6 weeks

4. Other respiratory diseases

5. Women who are pregnant or unwilling to use appropriate contraception during the study

6. Unable to withhold short-acting ß-agonist treatment for 6 hours before visit

Relative Potency of Inhaled Corticosteroids