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Zhao Y, Hellum BH, Liang A, Nilsen OG.Zhao Y, et al. Among authors: hellum bh.Phytother Res. 2012 Feb;26(2):277-83. doi: 10.1002/ptr.3554. Epub 2011 Jun 16.Phytother Res. 2012.PMID: 21678521