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.
Choy CK, Cho P, Chung WY, Benzie IF.Choy CK, et al. Among authors: chung wy.Optom Vis Sci. 2003 Sep;80(9):632-6. doi: 10.1097/00006324-200309000-00007.Optom Vis Sci. 2003.PMID: 14502043
Yuet-Wan Lok K, Chung WY, Benzie IF, Woo J.Yuet-Wan Lok K, et al. Among authors: chung wy.Food Addit Contam Part B Surveill. 2010;3(3):148-55. doi: 10.1080/19393210.2010.509815.Food Addit Contam Part B Surveill. 2010.PMID: 24779568