Submitted on: 13 April 2011.
Revised on: 06 May 2011.
Accepted on: 10 June 2011.
___________________AMERICAN JOURNAL OF CLINICAL NUTRITION
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Submitted on: 08 February 2000.
Revised on: 30 March 2000.
Accepted on: 26 May 2000.
___________________AMERICAN JOURNAL OF CLINICAL NUTRITION
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