“…Most of the studies were performed in African countries: nine in Uganda [32, 35, 37, 40-42, 47, 48, 52], four in Nigeria [26,43,49,50], two in Ethiopia [30,31], one in Egypt [33], one in Ghana [38], and one in Rwanda [29]. The remainder were: three studies were from Thailand [22,25,46], three from Lebanon [23,24,36], one from Iraq [45], two from Bangladesh [51,52], one from Jordan [34], two from Brazil [6,44], one from Australia [27] and one study was performed in two different countries (Thailand and Ethiopia) [39].…”