Excuse me, but DUH!

When they say 'hampered in its original aim', it means they couldn't find -any- who have not partaken for a control group.

You'll understand if you read the article, this news story is adult oriented - warning.

I've heard more detailed accounts so I could search for and find one of those to post, but if you're that interested, you know how to use google.

No further comment except to remind you that someone got a lot of grant money for this study. I don't care what country it originated in, waste is global.