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3. ActionBioscience.org (2008) http://www.actionbioscience.org/biotech/pusztai.html . Accessed 30 April 2008
4. US FDA (2008) http://www.cfsan.fda.gov/~lrd/biotechm.html . Accessed 30 April 2008
5. US FDA (2001) http://www.cfsan.fda.gov/~lrd/fr010118.html . Accessed 30 April 2008