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.
Qi LW, Gu XJ, Li P, Liang Y, Hao H, Wang G.Qi LW, et al. Among authors: gu xj.Rapid Commun Mass Spectrom. 2009 Jul;23(14):2151-60. doi: 10.1002/rcm.4125.Rapid Commun Mass Spectrom. 2009.PMID: 19517461
Gu XJ, Li YB, Li P, Qian SH, Duan JA.Gu XJ, et al.Zhongguo Zhong Yao Za Zhi. 2007 May;32(10):923-6.Zhongguo Zhong Yao Za Zhi. 2007.PMID: 17655147Chinese.
Gu X, Li Y, Mu J, Zhang Y.Gu X, et al.J Environ Sci (China). 2013 Dec;25 Suppl 1:S161-3. doi: 10.1016/S1001-0742(14)60648-3.J Environ Sci (China). 2013.PMID: 25078822