Role of presymptomatic transmission of COVID-19: evidence from Beijing, China
Yi Zhang, David Muscatello, Yi Tian, Yanwei Chen, Shuang Li, Wei Duan, Chunna Ma, Ying Sun, Shuangsheng Wu, Lin Ge, Peng Yang, Lei Jia, Quanyi Wang, Chandini Raina MacIntyre
J Epidemiol Community Health Jan 2021, 75 (1) 84-87; DOI: 10.1136/jech-2020-214635