Dr. Barakett, I want to challenge you on one of the things you said in the last round of questioning. You referred to marijuana being a gateway drug. There are definitive textbooks on the subject. We're talking about textbooks that are used in residency and actually for post-graduate fellowships for toxicology—Ellenhorn's Medical Toxicology and Goldfrank’s Toxicologic Emergencies. They're very clear that the concept of marijuana as a gateway drug has never been definitively established. This has also been said repeatedly in multiple scientific journals on addiction in the meantime.
Given that information, what is the basis of the statement you made about marijuana being a gateway drug?