What determines subjective health status in patients with chronic obstructive pulmonary disease: importance of symptoms in subjective health status of COPD patients

Bentsen, S. B., Henriksen, A. H., Wentzel-Larsen, T., Hanestad, B. R., & Wahl, A. (2008). What determines subjective health status in patients with chronic obstructive pulmonary disease: importance of symptoms in subjective health status of COPD patients. Health and Quality of Life Outcomes, 6. doi:10.1186/1477-7525-6-115