Becker, C.; Schäfer, J.; Carvalho, L. L.; Vitiello, I. P.; da Silva, A. L. CAT Correlates Positively With Respiratory Rate and Is a Significant Predictor of the Impact of COPD on Daily Life of Patients: A Cross Sectional Study. Multidiscip Respir Med 2014, 9 (1). https://doi.org/10.4081/mrm.2014.382.