And we haven't heard of any others; in fact I don't think there are any. So it's all anecdotal, and it's from people who are taking a drug that is six times more powerful than it was perhaps 20 years ago—perhaps more—that creates a powerful euphoria and makes them feel better simply because of the euphoria. The anecdotal evidence is not clinical evidence.
On May 13th, 2014. See this statement in context.