P134 Methacholine challenge to demonstrate therapeutic equivalence of terbutaline via different turbuhaler devices in patients with mild to moderate asthma: appraisal of a phase iii, four-way crossover design
P134 Methacholine challenge to demonstrate therapeutic equivalence of terbutaline via different turbuhaler devices in patients with mild to moderate asthma: appraisal of a phase iii, four-way crossover design
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