I'm not sure if this is what they meant, but older parents have a higher risk of having autistic children http://www.nature.com/mp/journal/v21/n5/full/mp201570

I'm not sure if this is what they meant, but older parents have a higher risk of having autistic children http://www.nature.com/mp/journal/v21/n5/full/mp201570a.html http://www.nature.com/mp/journal/v21/n5/full/mp201570a.html