The main problem, certainly, for the people who will not get vaccinated with Thimerosal, which was put into polio vaccine. And the belief was that it may cause autism. And there's been an awful lot done in terms of studies in Western Europe, Canada, the United States, and no correlation was found between Thimerosal and autism from those children who took vaccines. Indeed, when Thimerosal was taken out of many of these vaccines, the autism rate in the United States still rose.