Screening for and combining serum intestinal barrier-related biomarkers to predict the disease severity of AECOPD - Yin, Jiuheng; Wang, Shuai; Qiu, Yuan; Jiang, Enlai; Du, Guangsheng; Wang, Wensheng; Xu, Pengyuan; Yang, Hua; Hu, Mingdong; Xiao, Weidong (Annals of Palliative Medicine, 2020)