Clinical features of asymptomatic or subclinical COVID-19 in children
LIU You-Jing, CHEN Peng, LIU Zhi-Sheng, LI Ying, DU Hui, XU Jia-Li
CJCP . 2020, (6): 578 -582 .  DOI: 10.7499/j.issn.1008-8830.2004088