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.
Hammar M, Heijl A, Svedin CG, Scheer J, Frisk J, Nedstrand E.Hammar M, et al.Lakartidningen. 1995 Mar 29;92(13):1389-90.Lakartidningen. 1995.PMID: 7707788Swedish.No abstract available.
Hammar M, Frisk J, Brynhildsen J, Dabrosin L, Lindgren R, Nedstrand E, Wyon Y.Hammar M, et al.Lakartidningen. 1997 Mar 19;94(12):1084-8.Lakartidningen. 1997.PMID: 9121242Swedish.
Brynhildsen JO, Björs E, Skarsgård C, Hammar ML.Brynhildsen JO, et al. Among authors: hammar ml.Spine (Phila Pa 1976). 1998 Apr 1;23(7):809-13. doi: 10.1097/00007632-199804010-00014.Spine (Phila Pa 1976). 1998.PMID: 9563112