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.
Duncan AE, Abd-Elsayed A, Maheshwari A, Xu M, Soltesz E, Koch CG.Duncan AE, et al. Among authors: xu m.Anesthesiology. 2010 Apr;112(4):860-71. doi: 10.1097/ALN.0b013e3181d3d4b4.Anesthesiology. 2010.PMID: 20216389Free article.