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.
Singh K, Vaccaro AR, Kim J, Lorenz EP, Lim TH, An HS.Singh K, et al.Spine (Phila Pa 1976). 2003 Oct 15;28(20):2352-8; discussion 2358. doi: 10.1097/01.BRS.0000085344.22471.23.Spine (Phila Pa 1976). 2003.PMID: 14560082
Goldberg EJ, Singh K, Van U, Garretson R, An HS.Goldberg EJ, et al. Among authors: singh k.Spine J. 2002 Nov-Dec;2(6):408-14. doi: 10.1016/s1529-9430(02)00441-2.Spine J. 2002.PMID: 14589262
An HS, Singh K, Vaccaro AR, Wang G, Yoshida H, Eck J, McGrady L, Lim TH.An HS, et al. Among authors: singh k.Spine (Phila Pa 1976). 2004 Feb 1;29(3):257-62. doi: 10.1097/01.brs.0000106979.54651.d6.Spine (Phila Pa 1976). 2004.PMID: 14752346
Singh K, An HS, Samartzis D, Nassr A, Provus J, Hickey M, Andersson GB.Singh K, et al.Spine (Phila Pa 1976). 2005 Aug 1;30(15):1750-5. doi: 10.1097/01.brs.0000172228.74763.99.Spine (Phila Pa 1976). 2005.PMID: 16094277