“…A total of 9,440 documents were searched in this study, and after de-duplication, reading the title, abstract and full text, 22 documents were finally included ( 10 , 12 , 22 , 24 , 25 , 31 - 47 ). These included two guidelines ( 34 , 36 ), 11 systematic reviews ( 10 , 22 , 25 , 31 - 33 , 35 , 38 , 41 , 42 , 45 ), 1 evidence summary ( 37 ), 1 technical report ( 24 ), 2 practice recommendations ( 12 , 39 ), and 5 randomized controlled trials ( 40 , 43 , 44 , 46 , 47 ). The basic characteristics of the included literature are shown in Table 2 .…”