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    Does the COPD assessment test (CATTM) questionnaire produce similar results when self- or interviewer administered?

    The COPD assessment test (CAT) is a questionnaire that assesses the impact of chronic obstructive pulmonary disease (COPD) on health status, but some patients have difficulties filling it up by themselves. We...

    A. Agusti, J. J. Soler-Cataluña, J. Molina, E. Morejon in Quality of Life Research (2015)