Tsiligianni, I. G., van der Molen, T., Moraitaki, D., Lopez, I., Kocks, J. W., Karagiannis, K., . . . Tzanakis, N. (2012). Assessing health status in COPD. A head-to-head comparison between the COPD assessment test (CAT) and the clinical COPD questionnaire (CCQ). BioMed Central.

Tsiligianni, Ioanna G., Thys van der Molen, Despoina Moraitaki, Ilaine Lopez, Janwillem WH Kocks, Konstantinos Karagiannis, Nikolaos Siafakas, and Nikolaos Tzanakis. Assessing Health Status in COPD. A Head-to-head Comparison between the COPD Assessment Test (CAT) and the Clinical COPD Questionnaire (CCQ). BioMed Central, 2012.

Tsiligianni, Ioanna G., et al. Assessing Health Status in COPD. A Head-to-head Comparison between the COPD Assessment Test (CAT) and the Clinical COPD Questionnaire (CCQ). BioMed Central, 2012.