“…One study was published in German. Twenty-two studies (54%) were from North America (United States 44% 9,24,25,34,55,60,71,80,85,92,99,107–110,127,128,132 ; Canada 10% 63,90,114,125 ); 12 (29%) from Europe 3,6,12,46,56,69,73,84,87,94,95,101 ; 3 (7%) from Australia; 18,118,120 and 1 each from Saudi Arabia, 68 Philippines, 76 Thailand, 88 and Taiwan. 50…”