Double blind, placebo controlled crossover study in COPD patients to assess the acute effect of budesonide/formoterol using HRCT and lung function tests
Lieve De Backer, Jan De Backer, Wim Vos, Cedric Van Holsbeke, Samir Vinchurkar, Wilfried De Backer
European Respiratory Journal 2011 38: p3362; DOI: