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.
Yao WY, Li SY, Sng BL, Lim Y, Sia AT.Yao WY, et al. Among authors: sng bl.Can J Anaesth. 2012 Jul;59(7):648-54. doi: 10.1007/s12630-012-9718-4. Epub 2012 May 4.Can J Anaesth. 2012.PMID: 22556005Clinical Trial.
Yu S, Tan KK, Sng BL, Li S, Sia AT.Yu S, et al. Among authors: sng bl.Ultrasound Med Biol. 2014 Sep;40(9):1980-90. doi: 10.1016/j.ultrasmedbio.2014.03.010. Epub 2014 Jun 25.Ultrasound Med Biol. 2014.PMID: 24972502