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.
Boo NY, Cheah IG.Boo NY, et al. Among authors: cheah ig.Singapore Med J. 2016 Aug;57(8):456-63. doi: 10.11622/smedj.2016137.Singapore Med J. 2016.PMID: 27549510Free PMC article.
Boo NY, Cheah IG.Boo NY, et al. Among authors: cheah ig.Singapore Med J. 2016 Mar;57(3):144-52. doi: 10.11622/smedj.2016056.Singapore Med J. 2016.PMID: 26996633Free PMC article.
Lim NL, Nordin MM, Cheah IG.Lim NL, et al. Among authors: cheah ig.Med J Malaysia. 1994 Mar;49(1):4-11.Med J Malaysia. 1994.PMID: 8057989Free article.Clinical Trial.