Intensified Therapy with Inhaled Corticosteroids and Long-Acting β2-Agonists at the Onset of Upper Respiratory Tract Infection to Prevent Chronic Obstructive Pulmonary Disease Exacerbations. A Multicenter, Randomized, Double-Blind, Placebo-controlled Trial

American Journal of Respiratory and Critical Care Medicine, Volume 197, Issue 9, Page 1136-1146, May 1, 2018.


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