The biggest and most comprehensive ones are the U.K. guidelines. These are the NICE guidelines. They really work through all or almost all of the different aspects of Parkinson's. Those were really the basis for developing our Canadian guidelines.
The Europeans came out with some guidelines that were okay but not great. Then the Americans took the approach of, as I mentioned, only giving recommendations if they're evidence-based. That's great, and we need that, and we want to have the best evidence-based treatment options for people, but when that's lacking....
Those are really the three groups: the U.K. guidelines, the European guidelines, and the American academy guidelines.