If I could just add to that, yes, the diagnostic part is important, particularly for individuals, when they think they're going crazy, and Veterans Affairs requires a diagnosis. It's important in that regard, but there is a great deal of overlap.
The important piece we need to focus on is how we are going to treat this. How are we going to treat PTSD, traumatic brain injury, mefloquine? What techniques can we use? Our current treatment strategies are not good enough. Our current ability to evaluate what's going on in the brain is not good enough. We need to move forward with these technologies, and then we may be able to come up with some treatment strategies. It may actually help separate out the disorders.