[American Thoracic Society American Thoracic Society 2011 International Conference, May 13-18, 2011 • Denver Colorado - ()] A31. OPTIMIZING THERAPEUTIC STRATEGIES IN AIRWAYS DISEASE - A Multicentre 12-Month Non-Interventional Study Of The Real-Life Effectivenes Of An Extra-Fine Hydrofluoroalkane Beclomethasone Diproprionate/Formoterol Pressurized Metered-Dose Inhaler In The Treatment Of Adult Patients With Persistent Asthma In Belgium