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Braidy N, Guillemin GJ, Grant R.Braidy N, et al. Among authors: guillemin gj.Int J Tryptophan Res. 2011;4:29-37. doi: 10.4137/IJTR.S7052. Epub 2011 May 8.Int J Tryptophan Res. 2011.PMID: 22084601Free PMC article.