['asthma']
["budesonide/formoterol 'as needed' + budesonide placebo bid", "terbutaline 'as needed' + placebo budesonide bid", "budesonide bid + terbutaline 'as needed'"]

        INCLUSION CRITERIA 1. Provision of informed consent prior to any study specific procedures.
        For patients under-age, signed informed consent from both the patient and the patient's
        parent/legal guardian is required 2. Male or Female, ≥12 years of age 3. Documented
        diagnosis of asthma for at least 6 months prior to Visit 1 4. Patients who are in need of
        Step 2 treatment according to Global Initiative for Asthma guidelines 5. Patients treated
        with 'as needed' inhaled short-acting bronchodilator(s) only should have pre-bronchodilator
        Forced Expiratory Volume in one second (FEV1) ≥ 60 % of Predicted Normal (PN) and
        post-bronchodilator FEV1 ≥ 80 % PN 6. Patients treated with low stable dose of inhaled
        corticosteroid or leukotriene antagonist in addition to 'as needed' use of inhaled
        short-acting bronchodilator(s) should have pre-bronchodilator FEV1 ≥80 % PN 7. Patients
        should have reversible airway obstruction 8. To be randomized patients must have used
        Bricanyl Turbuhaler 'as needed' on at least 3 separate days during the last week of the run
        in period. EXCLUSION CRITERIA 1. Patient has a history of life-threatening asthma including
        intubation and intensive care unit admission 2. Patient has had an asthma worsening
        requiring change in treatment other than inhaled short-acting bronchodilator(s) within 30
        days prior to Visit 1 or between Visits 1 and 2; or a treatment other than Bricanyl
        Turbuhaler from Visit 2 until randomization 3. Patient has required treatment with oral,
        rectal or parenteral glucocorticosteroids (GCS) within 30 days and/or depot parenteral GCS
        within 12 weeks prior to Visit 1 4. Smoker (current or previous) with a smoking history of
        ≥ 10 pack years 5. Pregnancy, breast-feeding or planned pregnancy during the study.
      