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

Bentsen, S., Henriksen, A., Wentzel-Larsen, T., Hanestad, B., & Wahl, A. K. (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.