Epidemiological features of severe acute respiratory syndrome coronavirus 2 infection in children in Shijiazhuang, China: an analysis of 133 cases
LU Su-Kun, NIU Bo, JI Li-Li, LIU Jian-Hua, SHUAI Jin-Feng
CJCP . 2021, (5): 456 -459 .  DOI: 10.7499/j.issn.1008-8830.2102014