Done man. Never done E, but I am actually trying it on Friday, or Sunday, so I filled the "quiz" out for marijuana use. I'm an American by the way, but I doubt that matters for your questionnaire.
University of The West of England, Bristol.
Researcher: Alan Paterson
alan2.paterson [at] live.uwe.ac.uk
Academic Supervisor: Dr Chris Alford
Chris.Alford [at] uwe.ac.uk