“…According to the US Agency for Healthcare Research and Quality, the level of evidence of the most of the articles was IIb [ 7 , 8 , 9 , 10 , 11 , 12 , 13 ], followed by level III [ 14 , 15 , 16 , 17 ]. The rest of them were level IIa [ 18 , 19 , 20 ] and Ib [ 21 , 22 , 23 ]. The countries of the articles were: Turkey (n = 5) [ 7 , 12 , 13 , 15 , 21 ], Brazil (n = 4) [ 8 , 10 , 18 , 20 ], Netherlands (n = 3) [ 14 , 17 , 23 ], United States (n = 3) [ 9 , 11 , 22 ], Chile (n = 1) [ 19 ] and Ireland (n = 1) [ 16 ].…”