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.
Jeong HS, Baek CH, Son YI, Cho DY, Chung MK, Min JY, Ko YH, Kim BT.Jeong HS, et al.J Korean Med Sci. 2006 Oct;21(5):865-70. doi: 10.3346/jkms.2006.21.5.865.J Korean Med Sci. 2006.PMID: 17043421Free PMC article.
Jeong HS, Baek CH, Son YI, Ki Chung M, Kyung Lee D, Young Choi J, Kim BT, Kim HJ.Jeong HS, et al.Head Neck. 2007 Mar;29(3):203-10. doi: 10.1002/hed.20504.Head Neck. 2007.PMID: 17111430