“…We rated two reviews as being of moderate methodological quality [ 6 , 37 ], 13 as low [ 19 , 20 , 23 , 25 – 27 , 29 , 31 , 32 , 33 ••, 34 , 38 •, 43 ], and 11 as critically low [ 21 , 22 , 24 , 28 , 30 , 35 , 36 , 39 – 42 ]. A detailed evaluation of each AMSTAR 2 criteria can be found in the Online Resource .…”