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.
Höppchen I, Ullrich C, Wensing M, Poß-Doering R, Suda AJ.Höppchen I, et al. Among authors: ullrich c.Unfallchirurg. 2021 Jun;124(6):481-488. doi: 10.1007/s00113-020-00917-0.Unfallchirurg. 2021.PMID: 33170311Free PMC article.German.
Ullrich C, Stürmlinger A, Wensing M, Krug K.Ullrich C, et al.BMC Med Res Methodol. 2020 Dec 10;20(1):301. doi: 10.1186/s12874-020-01186-6.BMC Med Res Methodol. 2020.PMID: 33302886Free PMC article.
Bombana M, Wensing M, Wittenborn L, Ullrich C.Bombana M, et al. Among authors: ullrich c.Int J Environ Res Public Health. 2022 Sep 16;19(18):11674. doi: 10.3390/ijerph191811674.Int J Environ Res Public Health. 2022.PMID: 36141943Free PMC article.
Arnold C, Hennrich P, Wensing M, Ullrich C.Arnold C, et al. Among authors: ullrich c.BMC Prim Care. 2023 May 25;24(1):118. doi: 10.1186/s12875-023-02069-7.BMC Prim Care. 2023.PMID: 37231391Free PMC article.