The efficacy and safety of inhaled fluticasone propionate/salmeterol and ipratropium/albuterol for the treatment of chronic obstructive pulmonary disease: An eight-week, multicenter, randomized, double-blind, double-dummy, parallel-group study
Barry J. Make, Nicola Alexander Hanania, Richard ZuWallack, Chris J. Kalberg, Amanda H. Emmett, Christy Brown, Katharine Knobil
Abstract