Therapy persistence and adherence in patients with chronic obstructive pulmonary disease: multiple versus single long-acting maintenance inhalers
                    J Med Econ. 2011;14(4):486-96. Epub 2011 Jun 16.
                    
                    
                   
                        
                            View abstract
                        
                    
                        Authors
Yu AP, 
Guerin A, Ponce de Leon D, Ramakrishnan K, 
Wu EQ, Mocarski M, Blum S, Setyawan J