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web | Biology News Net | 2005-07-01 | ||
web | Mark Johnson | Associated Press | 2005-07-17 | |
web | Elizabeth Svoboda | San Francisco Chronicle | 2005-06-27 | |
web | David Pimentel, Bonnie Berger | BioScience | 2004-10-01 | |
web | David Pimentel and Marcia Pime... | Am J Clin Nutr | 2003-09-01 |