“…Nearly half of the studies originated from the United States (n = 24, 48%) 42,44‐47,50,51,53‐55,59,60,62‐67,69‐74 . The remainder were from the UK (n = 9), 6,35,36,52,58,75‐78 Australia (n = 4), 38,49,79,80 Tanzania (n = 2), 41,81 Canada (n = 2), 37,57 and Brazil (n = 2) 61,68 . Single studies originated from Ethiopia, 40 Ireland, 39 Mexico, 82 New Zealand, 48 Scotland, 56 Spain, 43 and Sweden 83 .…”