Thanks very much, Mark. If you follow the logic of that, it would suggest that, actually, GPs couldn't refer anyone on unless they'd experienced the illness themselves. We have to follow the fact that, actually, GPs and people in primary care follow guidance and they follow guidelines that we have set for them, which is generally based on NICE guidelines, which has all been clinically proven. That's why we're making sure that we're going via the primary care route. I think it's really important that we give that advice, that we train people up within the primary care communities and that they know where they can go for help. I can assure you that the patient voice is being heard. That's why we are going down this route, because what they've told us is, 'Not enough GPs understand what we're going through'. That's why we're strengthening these guidelines.