“…According to the quality assessment of papers, 15 studies ( 24 – 27 , 29 , 30 – 35 , 39 , 45 ,, 48 , 51 ) were considered as “high quality”; 10 studies ( 23 , 28 , 36 – 38 , 40 – 43 , 52 ) were assigned as “fair to good quality”, and 5 studies ( 44 , 46 , 47 , 49 , 50 ) were regarded as low quality.…”