“…The geographical province of studies was assessed. We found: Six studies in India [ 72 , 86 , 94 , 95 , 98 , 102 ], five studies in China [ 50 , 77 , 84 , 89 ], three studies in Turkey [ 71 , 82 , 105 ], three studies in Nepal [ 76 , 90 , 97 ], three studies in Thailand [ 70 , 75 , 83 ], two studies in the USA [ 91 , 100 ], two studies in Australia [ 57 , 99 ], two studies in Malaysia [ 42 , 96 ], two studies in Ethiopia [ 81 , 93 ], one study in German [ 103 ], one study in the UK [ 104 ], one study in Norway [ 85 ], one study in Italy [ 79 ], one study in Japan [ 87 ], one study in Mexico [ 78 ], one study in Brazil [ 92 ], one study in Finland [ 74 ], one study in Singapore [ 101 ], one study in Saudi Arabia [ 69 ], one study in the United Arab Emirates [ 80 ], one study in Ghana [ 88 ], one study in Sudan [ 73 ] and one study in Egypt [ 38 ]. Most of the studies in the present analysis were cross-sectional [ 38 , 42 , 50 , 57 , 69 – 79 , 81 , 82 , 84 – 90 , 92 , 93 , 95 – 98 , 101 – 103 , 105 ] and four studies were Cohort [ …”