Risk factors for severe COVID-19: Evidence from 167 hospitalized patients in Anhui, China. Issue 1 (July 2020) - Wei, Yuan-Yuan; Wang, Rui-Rui; Zhang, Da-Wei; Tu, You-Hui; Chen, Chang-Shan; Ji, Shuang; Li, Chun-Xi; Li, Xiu-Yong; Zhou, Meng-Xi; Cao, Wen-Sheng; Han, Ming-Feng; Fei, Guang-He