“…Among them, six were excluded because they did not fulfill the inclusion criteria. Thus, in total, 19 studies were eligible [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ] ( Table 1 ). The remaining 209 studies did not meet the inclusion criteria.…”