PeerJ Author 135 Points Contributions by role Author 135 Contributions by subject area Virology Epidemiology Infectious Diseases COVID-19 Wei Xu PeerJ Author Summary Epidemiology Infectious Diseases Virology PeerJ Contributions Articles 1 November 23, 2021 Risk factors associated with prolonged viral clearance in patients with a refractory course of COVID-19: a retrospective study Weitao Zhuang, Shujie Huang, Dongya Wang, Lulu Zha, Wei Xu, Guibin Qiao https://doi.org/10.7717/peerj.12535 PubMed 34900440
