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Yang Y, Zhang FS, Li HF, Jiang RF.Yang Y, et al. Among authors: jiang rf.J Environ Manage. 2009 Feb;90(2):1117-22. doi: 10.1016/j.jenvman.2008.05.004. Epub 2008 Jun 26.J Environ Manage. 2009.PMID: 18583020
He F, Jiang R, Chen Q, Zhang F, Su F.He F, et al.Environ Pollut. 2009 May;157(5):1666-72. doi: 10.1016/j.envpol.2008.12.017. Epub 2009 Jan 23.Environ Pollut. 2009.PMID: 19167792