Original Research

Umeclidinium/Vilanterol Compared with Fluticasone Propionate/Salmeterol, Budesonide/Formoterol, and Tiotropium as Initial Maintenance Therapy in Patients with COPD Who Have High Costs and Comorbidities

Kalhan R, Slade D, Ray R, Moretz C, Germain G, Laliberté F, Shen Q, Duh MS, MacKnight SD, Hahn B

International Journal of Chronic Obstructive Pulmonary Disease 2021, 16:1149-1161

Published Date: 22 April 2021