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Zhang X, Yang L, Li Y, Li H, Wang W, Ye B.Zhang X, et al. Among authors: li y, li h.Environ Monit Assess. 2012 Apr;184(4):2261-73. doi: 10.1007/s10661-011-2115-6. Epub 2011 May 14.Environ Monit Assess. 2012.PMID: 21573711Review.
Li Y, Wang W, Li H, Yang L, Luo K.Li Y, et al. Among authors: li h.Huan Jing Ke Xue. 2002 Nov;23(6):101-4.Huan Jing Ke Xue. 2002.PMID: 12619287Chinese.
Hou SF, Li HR, Wang LZ, Li DZ, Yang LS, Li CZ.Hou SF, et al.World J Gastroenterol. 2003 May;9(5):1063-6. doi: 10.3748/wjg.v9.i5.1063.World J Gastroenterol. 2003.PMID: 12717857Free PMC article.
Li H, Hou S, Wang L, Li D, Yang L, Li C.Li H, et al. Among authors: li c, li d.Wei Sheng Yan Jiu. 2003 Sep;32(5):443-6.Wei Sheng Yan Jiu. 2003.PMID: 14650186Chinese.
Li SJ, Yang LS, Wang WY, Hu X, Li YH, Li HR, Wang LZ.Li SJ, et al.Guang Pu Xue Yu Guang Pu Fen Xi. 2007 Mar;27(3):585-8.Guang Pu Xue Yu Guang Pu Fen Xi. 2007.PMID: 17554928Chinese.
Li YH, Wang LZ, Wang WY, Yang LS, Li HR.Li YH, et al.Guang Pu Xue Yu Guang Pu Fen Xi. 2007 Apr;27(4):789-91.Guang Pu Xue Yu Guang Pu Fen Xi. 2007.PMID: 17608200Chinese.