Table 2.

Methodological quality assessment scores of the included studies.

First Author	Selection	Comparability	Outcome	Total score
Edger et al.	3	1	2	6
Dana et al.	2	2	3	7
Shivappa et al.	3	2	2	7
Mark et al.	2	2	3	7
Nazanin et al.	3	2	1	6