Original Research

Is the Disease Burden from COPD in Norway Falling off? A Study of Time Trends in Three Different Data Sources

Melbye H, Helgeland J, Karlstad Ø, Ariansen I, Langhammer A, Wisløff T, Nafstad P, Nystad W

International Journal of Chronic Obstructive Pulmonary Disease 2020, 15:323-334

Published Date: 12 February 2020