“…Ten studies were published before 1990 [6–8,10,39,40,42,45,46,49]. Ten reports were from the US ( n = 2,019) [6,8,10,38,39,42,49,51,52,55], eight from the UK ( n = 1645) [7,44,45,53,56–58,61], six from Germany ( n = 624) [9,41,47,48,59,60], two from Australia ( n = 473) [40,46], and one each from France ( n = 715) [50], The Netherlands ( n = 150) [43], and Greece ( n = 58) [54]. …”