“…[27][28][29][30][31][32][33][34][35][36][37][38][39][40][41] Included RCTs and non-RCTs were published between 1988 and 2017 and between 2002 and 2018 respectively. Countries of publication for RCTs included (in descending order): the USA (n=4), 17,18,20,43 Australia (n=3), 21,22,26 Hong Kong (n=2), 9,25 the UK (n=2), 24,44 the Netherlands (n=1), 42 and Japan (n=1). 23 Countries of publication for non-RCTs included (in descending order): the USA (n=5), 28,31,32,37,41 Australia (n=4), 27,29,30,36 the UK (n=2), 34,35 India (n=1), 33 Hong Kong (n=1), 38 Iran (n=1), 39 and China (n=1).…”