Studies Selection Comparability Outcome Total score
Van et al. [4] ★★★ ★★ 6
Ochi et al. [5] ★★★★ 6
Cassetta et al. [6] ★★★★ ★★ 7
Cassetta et al. [21] ★★★★ ★★ 7
D'haese et al. [22] ★★★ ★★★ 7