“…Finally, 19 studies [ 3 , 4 , 5 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 ] were included. Of these, nine were experimental [ 3 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ], including eight RTCs [ 3 , 17 , 18 , 19 , 20 , 21 , 22 , 24 ] ( Table 2 ); four were observational studies [ 5 , 25 , 26 , 27 ] ( Table 3 ), and six were either systematic reviews [ 4 , 29 , 31 ] or a meta-analysis [ 28 ], while two encompassed both types of studies [ 30 , 32 ] ( Table 4 ).…”