I'm not aware of the data that really links those two.
Again, as Paul said, we're struggling with just keeping data from sports on the actual incidence of concussion. As Paul said, we do need a database around who are suffering from that, because when we think about all these interventions, we need to see how concussions are impacting mental health.
From a mental health perspective, I can't speak to that. Anecdotally, I've heard stories. The thing about mental health as well, as we're all aware, is that we are encouraging athletes, anybody, to speak more about it. The reality is that there are some who don't. There are some who might not even come forth as wanting to do that. That's an issue we face, too, as part of this. When we're trying to do something that's evidence-based, we're sometimes very limited to those things.