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. 2019 May 23;19:109. doi: 10.1186/s12906-019-2510-z

Table 2.

Methodological quality of included studies

Study A B C D E F Total
He et al. [20] 5
Chen et al. [27] 4
Huang et al. [21] 5
Oliveira et al. [19] 5
Patil et al. [17] 4
Haghani et al. [31] 5
Zhan et al. [32] 4
Gao et al. [22] 5
Moghaddam et al. [23] 4
Durairajan et al. [15] 5
Lee et al. [33] 3
Bhutada et al. [34] 3
Lim et al. [24] 4
Zhu et al. [25] 4
Peng et al. [28] 4