Dr. Lorna Lopez:

Let me clarify. No, it is certainly not the case. I was referring to a large US study that showed a 30% increase over the past four decades. The study's conclusion was that the majority of that increase was due to diagnostic expansion. There are many other aspects to it, of course. The first comment I made in my opening statement was that autism was a multifactorial condition. Genetics are a part of it and an explanation for some of the causes----