The researchers repeated their analysis 10 times, splitting up their study group (children with a medical diagnosis of autism and children with no signs of autism) in different ways.

BBC: EEG brain trace 'can detect autism'

The group, who announced last October they were splitting after 14 years, are set to bow out with a final concert at Dublin's Croke Park on 23 June.

BBC: Westlife farewell concert to be shown in cinemas

This sort of splitting apart of risks and benefits becomes ethically suspect as it moves toward all the risk going to one group and all the benefits to another.

CNN: Exploitation or salvation?