“…Different countries were included in this review. Four studies were conducted in Spain ( 15 , 16 , 18 , 19 ), two each in Ecuador ( 13 , 20 ), Turkey ( 21 , 22 ), Korea ( 23 , 24 ), and China ( 25 , 26 ), and one each in India ( 27 ), Bangladesh ( 28 ), Saudi Arabia ( 29 ), the United States ( 30 ), Oman ( 31 ), Africa ( 32 ), Finland ( 17 ), Israel ( 33 ), Japan ( 34 ), Russia ( 35 ), Chile ( 36 ), Brazil ( 37 ), Poland ( 38 ), Italy ( 39 ), Nepal ( 40 ), Singapore ( 14 ), and Jordan ( 12 ). The smallest sample size was 187 ( 27 ) and the largest 2,886 ( 34 ).…”