Right. I'll come back to a randomized controlled trial, but before giving the details of that, I need to point out to the chairman that what you're describing is an observational study. Observational studies are by definition weak sources of evidence. The fact that it's large doesn't make it powerful. It just means it's likely to be more weak. I don't think we can put too much credence in that. We must focus on the—
On May 15th, 2019. See this statement in context.