Dataset from A Randomized, Open-Label, Two Period Crossover, Chronic Dosing, 1-Week, Pilot Study to Assess the Efficacy and Safety of Budesonide and Formoterol Fumarate Inhalation Aerosol Administered With a Spacer Compared With Symbicort® Turbuhaler® in Subjects With Severe to Very Severe Chronic Obstructive Pulmonary Disease and Low Peak Inspiratory Flow

Study comparing the same drugs as a dual combination product (budesonide and formoterol)
given via two different inhalers. To see which one results in the best effect on breathing.