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.
Roh MR, Chung HJ, Lee JH.Roh MR, et al.Yonsei Med J. 2004 Jun 30;45(3):523-6. doi: 10.3349/ymj.2004.45.3.523.Yonsei Med J. 2004.PMID: 15227741Free article.
Lee JH, Roh MR, Lee KH.Lee JH, et al. Among authors: roh mr.Yonsei Med J. 2006 Aug 31;47(4):485-90. doi: 10.3349/ymj.2006.47.4.485.Yonsei Med J. 2006.PMID: 16941737Free PMC article.