“…Of these, two studies were conducted at a semi-urban setting [31, 48], 10 in rural settings [32, 34–36, 39–42, 46, 47] and five studies did not specify their setting [33, 38, 44, 45, 49]. Of the included studies, three were conducted in south Africa [32, 41, 46], five in Kenya [35, 36, 42, 44, 45], two in Uganda [43, 49], two in Malawi [31, 33], one each in Zambia [34], Botswana [47], Ethiopia [39], Pakistan [38] and Swaziland [40]. All included studies were published between the year 2013 and 2017.…”