P123 Inhaled corticosteroid plus long-acting β2-agonist therapy is overused in the treatment of patients with chronic obstructive pulmonary disease: post hoc analyses of two 1-year studies
P123 Inhaled corticosteroid plus long-acting β2-agonist therapy is overused in the treatment of patients with chronic obstructive pulmonary disease: post hoc analyses of two 1-year studies