“…The average range in ages was 24.8 – 45.4 years and three studies had narrow age ranges (28–29; 19–21; 23–31 years) [ 29 , 35 , 37 ]. The participants’ age at diagnosis varied considerably: in ten studies they were at least partially diagnosed during the school period [ 21 , 23 , 25 , 29 , 31 – 33 , 35 – 37 ], in six studies they were at least partially diagnosed in adulthood [ 27 , 31 – 33 , 36 , 39 ], in one study the diagnosis was self-identified [ 26 ], in another study the age at diagnosis varied considerably [ 28 ] and in five studies the age at diagnosis was not specified [ 22 , 24 , 30 , 34 , 38 ].…”