Table 1.

Study characteristics

Authors	Country	Type of study	Category
Gu et al.[19]	Shanghai, China	Review	Risk assessment
To et al.[20]	Hong Kong, China	Clinical study	Risk assessment
Xu et al.[21]	Chengdu, China	In vitro study	Risk assessment
Ge et al.[1]	Hangzhou, China	Review	Recommendation
Guo et al.[22]	Beijing, China	Observational study	Recommendation
Li and Meng[23]	Wuhan, China	Review	Recommendation
Meng et al.[24]	Wuhan, China	Review	Recommendation
Peng et al.[25]	Chengdu, China	Review	Recommendation
Qu and Zhou[11]	Chengdu, china	Review	Recommendation
Sacsaquispe-Contreras[26]	Sheffield, UK	Review	Recommendation
Sabino-Silva et al.[27]	Canada, Brazil	Review	Recommendation
Tang et al.[28]	Nanjing, China	Review	Recommendation
Zhang and Jiang[29]	Shanghai, China	Review	Recommendation