An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Luo W, Chen TB, Gao D, Zheng GD.Luo W, et al. Among authors: zheng gd.Huan Jing Ke Xue. 2004 May;25(3):155-9.Huan Jing Ke Xue. 2004.PMID: 15327274Chinese.
Chen TB, Luo W, Gao D, Zheng GD.Chen TB, et al. Among authors: zheng gd.Huan Jing Ke Xue. 2004 Nov;25(6):150-3.Huan Jing Ke Xue. 2004.PMID: 15759901Chinese.
Gao D, Zheng GD, Chen TB, Luo W, Gao W, Zhang YA, Li YX.Gao D, et al. Among authors: zheng gd.J Environ Sci (China). 2005;17(6):957-61.J Environ Sci (China). 2005.PMID: 16465886