Table 1: Assessment of quality of studies included in present systematic review according to NIH Quality Assessment Tool for Case Series Studies.

Study ID
(year)		 Question Overall rating
K C Liu et al. (2020) [17] 1 2 3 4 5 6 7 8 9 Reviewer 1 Reviewer 2
JFW Chan et al.(2020) [25] Yes No No CD NA Yes CD Yes Yes fair fair
Chaolin Huang et al.(2020) [37] Yes No NA CD NA Yes CD No No Poor poor
Chunbao xie et al.(2020) [38] Yes No NA CD NA Yes CD Yes Yes fair fair
Fang liu et al(2020) [39] Yes No NA CD NA Yes CD No No poor Poor
Xi xu et al.(2020) [40] Yes NA No CD NA Yes CD Yes Yes fair fair
Xiao wei et al(2020) [41] Yes NA No NA NA Yes CD Yes Yes fair fair
Yang s et al.(2020) [26] Yes NA No NA NA Yes CD Yes Yes fair fair
Soon ho yoon et al(2020) [27] Yes NA CD NA NA Yes CD Yes Yes fair fair
Mingli yuan et al.(2020) [28] Yes NA CD CD NA Yes CD Yes Yes fair fair
Li y et al.(2020) [42] Yes CD CD CD NA Yes CD No No poor Poor
Chung m et al.(2020) [30] Yes CD CD CD NA Yes CD Yes Yes fair fair
Bernheim et al.(2020) [31] Yes CD No CD NA Yes CD Yes Yes fair fair
Zhao et al.(2020) [32] Yes CD No CD NA Yes CD Yes Yes fair fair
Xia w et al.(2020) [43] Yes CD No CD NA Yes CD Yes Yes fair fair
Feng pan et al.(2020) [29] Yes CD NA CD NA Yes CD Yes Yes fair fair
Wei li et al.(2020) [44] Yes CD NA NA NA Yes CD Yes Yes fair fair
Han r et al.(2020) [45] Yes CD NA NA NA Yes CD Yes Yes fair fair
Xiong et al.(2020) [46] Yes No NA NA NA Yes CD No No poor Poor
Jiang wu et al.(2020) [47] Yes No NA NA NA Yes CD No Yes fair fair
Xiaoli Zhang et al.(2020) [48] Yes No NA NA NA Yes CD No Yes fair fair
Wu jing et al.(2020) [49] Yes No NA NA NA Yes CD Yes Yes fair fair
Chun shuang guan et al.(2020) [50] Yes NA No CD NA Yes CD Yes Yes fair fair
Feng xiang song et al.(2020) [51] Yes NA No CD NA Yes CD Yes Yes fair fair
Yu huan xu et al.(2020) [52] Yes NA CD CD NA Yes CD NA Yes fair fair
Yicheng fang et al.(2020) [53] Yes No CD CD NA Yes CD NA Yes fair fair
Wang et al.(2020) [34] Yes CD CD CD NA Yes CD NA Yes fair fair
Heshui shi et al.(2020) [54] Yes CD CD CD NA Yes CD Yes Yes fair fair
Yang et al.(2020) [55] Yes CD No CD NA Yes CD Yes Yes fair fair
Pan et al.(2020) [9] Yes No No NA NA Yes CD Yes Yes fair fair

Source document - National Heart, Lung, and Blood Institute; National Institute of Health; U.S. Department of Health and Human Services16 where NA – not applicable, CD – cannot be determined, no stands for not reported.