Clinical characteristics of 100 cases of coronavirus disease 2019 in Dongguan, China. Issue 4 (3rd April 2021) - Pan, Hai-en; Shi, Xiao-yi; Zheng, Zhi-dan; Tang, Qin; Zhong, Qing-Yang; Cao, Huan-huan; Chen, Song; Zhu, Hai-peng