text: On two days , 60 COPD patients underwent dyspnea evaluation ( VAS score ) and pulmonary function testing at baseline and one hour after placebo or 300μg indacaterol administration .
entities.text: placebo
entities.type: intervention
entities.text: indacaterol
entities.type: intervention
entities.text: dyspnea evaluation ( VAS score )
entities.type: outcome
entities.text: pulmonary function testing
entities.type: outcome
entities.text: 60 COPD patients
entities.type: participant