Effect of high-dose N-acetylcysteine on exacerbations and lung function in patients with mild-to-moderate COPD: a double-blind, parallel group, multicentre randomised clinical tria... oleh Yumin Zhou, Fan Wu, Zhe Shi, Jie Cao, Jia Tian, Weimin Yao, Liping Wei, Fenglei Li, Shan Cai, Yao Shen, Zanfeng Wang, Huilan Zhang, Yanfan Chen, Yingyun Fu, Zhiyi He, Chun Chang, Yongliang Jiang, Shujing Chen, Changli Yang, Shuqing Yu, Heshen Tian, Qijian Cheng, Ziwen Zhao, Yinghua Ying, Yong Zhou, Shengming Liu, Zhishan Deng, Peiyu Huang, Yunzhen Zhang, Xiangwen Luo, Haiyan Zhao, Jianping Gui, Weiguang Lai, Guoping Hu, Cong Liu, Ling Su, Zhiguang Liu, Jianhui Huang, Dongxing Zhao, Nanshan Zhong, Pixin Ran, On behalf of China N-acetylcysteine in Mild-to-moderate COPD Study Group