. 2020 Apr 21;22(4):e17089. doi: 10.2196/17089
©Yuyu Jiang, Fenglan Liu, Jianlan Guo, Pingping Sun, Zhongyi Chen, Jinping Li, Liming Cai, Hongqing Zhao, Ping Gao, Zhaosheng Ding, Xiaoliang Wu. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 21.04.2020.
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Figure 4.
Chronic obstructive pulmonary disease assessment test score and its change over time.