Original Research

CAT Score and SGRQ Definitions of Chronic Bronchitis as an Alternative to the Classical Definition

Choi JY, Yoon HK, Shin KC, Park SY, Lee CY, Ra SW, Jung KS, Yoo KH, Lee CH, Rhee CK

International Journal of Chronic Obstructive Pulmonary Disease 2019, 14:3043-3052

Published Date: 30 December 2019