“…The majority of studies were conducted in the USA (10) 5,25,[29][30][31][32]35,[40][41][42] with the remaining 21 studies carried out in the United Kingdom (6), 11,12,43,45,47,48 Canada (3), 21,37,39 Australia (2), 27,34 Poland (1), 38 Greece (1), 44 Greece and Hong Kong (1), 9 Sweden (2), 6,33 Ireland (2), 28,47 Finland (1), 36 and Switzerland (1). 26 The majority of studies considered nursing staff only (15), 9,11,25,27,30,[32][33][34][35][39][40][41]45,47,48 while others con...…”