Yet he didn't seem tired as he chatted in the light-filled study where he'd done much of that work.

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Meanwhile, Thomas Caldwell , a member of Thain's for-profit study group, was engaged in a very public seat-buying binge he'd begun in early 2004.

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In a study of hypothermia-related deaths by the CDC in Washington, D.

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I'd get seven hours of shut-eye a night because a six-year, large-scale population study of sleep done at the University of California, San Diego School of Medicine associated it with the lowest death rate among adults.

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Study leader Professor Jonathan Waxman, from Imperial College London, said vitamin D therapy was effective and well-tolerated.

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Dr Margherita Cantornas, who led the study at Penn State University in the US, said that the anti-inflammatory properties of vitamin D could allow the dosage of steroids to be reduced, cutting the side effects.

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