Compare the epidemiological and clinical features of imported and local COVID-19 cases in Hainan, China. - Wu, Biao; Lei, Zi-Ying; Wu, Kun-Liang; He, Jian-Rong; Cao, Hui-Juan; Fu, Juan; Chen, Feng; Chen, Yuan; Chen, Bao; Zhou, Xiao-Li; Huang, Tao; Wu, Tao; et al. (Infectious Diseases of Poverty, 2020)