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.
Grässel S, Rickert M, Opolka A, Bosserhoff A, Angele P, Grifka J, Anders S.Grässel S, et al. Among authors: opolka a.Rheumatology (Oxford). 2010 Feb;49(2):218-30. doi: 10.1093/rheumatology/kep326. Epub 2009 Dec 1.Rheumatology (Oxford). 2010.PMID: 19952089
Tingart M, Beckmann J, Opolka A, Matsuura M, Wiech O, Grifka J, Grässel S.Tingart M, et al. Among authors: opolka a.Calcif Tissue Int. 2008 Apr;82(4):300-8. doi: 10.1007/s00223-008-9111-z. Epub 2008 Mar 5.Calcif Tissue Int. 2008.PMID: 18320133
Schmid R, Schiffner S, Opolka A, Grässel S, Schubert T, Moser M, Bosserhoff AK.Schmid R, et al. Among authors: opolka a.Cell Death Dis. 2010 Nov 11;1(11):e97. doi: 10.1038/cddis.2010.78.Cell Death Dis. 2010.PMID: 21368873Free PMC article.