“…Publications were from the USA [ 29 , 31 , 53 , 64 , 65 , 35 , 36 , 41 , 42 , 44 , 46 , 47 , 50 ], the UK [ 9 , 43 , 51 , 54 , 57 , 61 ], Spain [ 30 , 32 , 38 , 40 ], Japan [ 52 , 56 , 59 ], Turkey [ 37 , 48 , 63 ], Canada [ 34 , 62 ], Australia [ 39 ], Greece [ 49 ], Italy [ 45 ], the Netherlands [ 28 ], New Zealand [ 60 ], Norway [ 58 ], Saudi Arabia [ 66 ] and Switzerland [ 33 ]. One study was multi-national, participating countries being Armenia, Australia, Central African Republic, India, Philippines, South Africa, Swaziland, Uganda and the UK [ 55 ].…”