Original Research

Exacerbation-related impairment of quality of life and work productivity in severe and very severe chronic obstructive pulmonary disease

Solem CT, Sun SX, Sudharshan L, Macahilig C, Katyal M, Gao X

International Journal of Chronic Obstructive Pulmonary Disease 2013, 8:641-652

Published Date: 10 December 2013