Table 3.

Risk of bias assessment criteria of each study

ARTICLE	A	B	C	D	E	TOTAL
Akubat et al. [31]	1	1	2	2	1	7
Kempton et al. [14]	1	1	2	2	1	7
Suarez-Arrones et al. [7]	1	1	1	2	1	6
Bucheit et al. [32]	1	1	2	2	1	7
Gallo et al. [11]	1	2	2	2	1	8
Malone et al. [22]	1	1	1	2	1	6
Torreno et al. [9]	1	1	2	2	1	7
Akubat et al. [10]	1	1	2	2	1	7
Delaney et al. [33]	1	2	2	2	1	8
Fox et al. [30]	1	1	2	2	1	7
Malone et al. [29]	1	2	2	2	1	8
Grünbichler et al. [21]	1	1	2	2	1	7
Reinhardt et al. [12]	1	2	2	2	1	8
Taylor et al. [13]	1	1	2	2	1	7