“…Most of the studies had been conducted in China ( n = 15) ( 30 , 33 , 34 , 45 , 50 , 52–55 , 63 , 64 , 66–69 ), Iran ( n = 6) ( 38 , 47 , 48 , 58 , 61 , 62 ), Italy ( n = 5) ( 29 , 31 , 41 , 44 , 57 ), India ( n = 4) ( 36 , 46 , 56 , 59 ), United States ( n = 2) ( 28 , 35 ), and Korea ( n = 2) ( 49 , 65 ). The remaining studies had been developed in Saudi Arabia ( n = 1) ( 27 ), Nigeria ( n = 1) ( 32 ), Indonesia ( n = 1) ( 39 ), France ( n = 1) ( 42 ), Turkey ( n = 1) ( 43 ), Thailand ( n = 1) ( 51 ), Latvia ( n = 1) ( 40 ), Ghana ( n = 1) ( 37 ), and Poland ( n = 1) ( 60 ).…”