Table 1.

Countries of origin of included studies

Country	Number of studies
India	8 studies [45, 47, 50, 51, 56, 59, 71, 76]
South Africa	6 studies [55, 58, 60, 61, 77, 79]
Thailand	3 studies [49, 54, 62]
Turkey	2 studies [48, 75]
Ukraine	2 studies [46, 63]
Brazil	2 studies [52, 72]
Russian Federation	1 study [57]
Rwanda	1 study [74]
Belarus	1 study [53]
China	1 study [73]
Malaysia	1 study [78]