“…A total of 9 papers were included in our study, the results showed that QFPDD combined with WMT improved clinical ER effectively ( Chen et al, 2021 ; Li et al, 2020 ; Li and Zhang, 2020 ; Wang et al, 2021a ; Zhang and Pan., 2021 ), in line with the reports from Jang et al (2021) , Ni et al(2020) , Shi et al (2020) , Sun et al (2020), Wang et al (2020) , and Zhong et al (2020) . QFPDD combined with WMT shortened duration of viral shedding ( Yu et al, 2020b ; Zeng et al, 2020 ) and length of hospital stay ( Li et al, 2020 ; Li and Zhang, 2020 ; Wang et al, 2021a ; Yu et al, 2020b ; Zeng et al, 2020 ), which is consistent with the studies published ( Sun et al,2021 ; Yu et al,2020a ).…”