Management and its effectiveness in close contacts of COVID-19 in Guangzhou
LUO Ye-fei, LIANG Ying-ru, LIU Fang-hua, MA Yu, MA Meng-meng, YANG Yun-ou, CHEN Si-yu, ZHANG Xiao, JING Qin-long
South China Journal of Preventive Medicine . 2021, (1): 39 -44 .  DOI: 10.12183/j.scjpm.2021.0039

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