“…Of 1254 articles initially returned, we included 20 articles that studied 8680 anaesthetists (Fig. 1 ) [ 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 ]. Studies sampled anaesthetists from 14 countries: Canada (n = 55) [ 26 ]; Egypt (n = 330) [ 32 , 41 ]; France (n = 46) [ 36 ]; India (n = 512) [ 24 ]; Italy (n = 195) [ 28 , 34 ]; Malaysia (n = 85) [ 23 ]; Pakistan (n = 8) [ 31 ]; Saudi Arabia (n = 241) [ 30 ]; Singapore (n = 115) [ 42 ]; Spain (n = 776) [ 39 ]; South Africa (n = 391) [ 33 ]; Turkey (n = 34) [ 40 ]; UK and Ireland (n = 1143) [ 27 , 37 , 38 ]; and the USA (n = 4759) [ 25 , 29 , 35 ].…”