APA

Szende A., Leidy N. K., Ståhl E. & Svensson K. (20090521). Estimating health utilities in patients with asthma and COPD: evidence on the performance of EQ-5D and SF-6D. : Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation.

Chicago

Szende A, Leidy N K, Ståhl E and Svensson K. 20090521. Estimating health utilities in patients with asthma and COPD: evidence on the performance of EQ-5D and SF-6D. : Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation.

Harvard

Szende A., Leidy N. K., Ståhl E. and Svensson K. (20090521). Estimating health utilities in patients with asthma and COPD: evidence on the performance of EQ-5D and SF-6D. : Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation.

MLA

Szende A, Leidy N K, Ståhl E and Svensson K. Estimating health utilities in patients with asthma and COPD: evidence on the performance of EQ-5D and SF-6D. : Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation. 20090521.