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.
Klein A, Birkenmaier C, Fromm J, Knösel T, Di Gioia D, Dürr HR.Klein A, et al. Among authors: birkenmaier c.World J Surg Oncol. 2022 Jan 11;20(1):14. doi: 10.1186/s12957-021-02481-2.World J Surg Oncol. 2022.PMID: 35016693Free PMC article.
Klein A, Birkenmaier C, Baur-Melnyk A, Roeder F, Jansson V, Dürr HR.Klein A, et al. Among authors: birkenmaier c.J Shoulder Elbow Surg. 2022 Feb;31(2):333-340. doi: 10.1016/j.jse.2021.07.023. Epub 2021 Aug 25.J Shoulder Elbow Surg. 2022.PMID: 34450280
Klein A, Bakhshai Y, Roeder F, Birkenmaier C, Baur-Melnyk A, Dürr HR.Klein A, et al. Among authors: birkenmaier c.BMC Musculoskelet Disord. 2021 Aug 31;22(1):750. doi: 10.1186/s12891-021-04629-3.BMC Musculoskelet Disord. 2021.PMID: 34465336Free PMC article.
Fottner A, Birkenmaier C, von Schulze Pellengahr C, Wegener B, Jansson V.Fottner A, et al. Among authors: birkenmaier c.Arthroscopy. 2008 Feb;24(2):229-33. doi: 10.1016/j.arthro.2007.07.029. Epub 2007 Nov 5.Arthroscopy. 2008.PMID: 18237709