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But surely you'll need to run randomised blind controls where there will be some tests done without screens, in case its the screens that cause the change in growth.

Any idiot can face a crisis - it's day to day living that wears you out.
by ceebs (ceebs (at) eurotrib (dot) com) on Fri Mar 12th, 2010 at 06:33:04 PM EST
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The cover of night hides many things.
by ATinNM on Fri Mar 12th, 2010 at 09:43:06 PM EST
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