Risk Factors of Psychological Responses of Chinese University Students During the COVID-19 Outbreak: Cross-sectional Web-Based Survey Study - Xudong Zhang; Xin Shi; Yang Wang; Huiquan Jing; Qingqing Zhai; Kunhang Li; Dan Zhao; Shiyu Zhong; Yuequn Song; Feng Zhang; Yijun Bao (Journal of Medical Internet Research, 2021)