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.
RoBbach M, Jochimsen TH, Herrmann KH, Ros C, Güllmar D, Reichenbach JR.RoBbach M, et al. Among authors: jochimsen th.Z Med Phys. 2011;21(1):33-41. doi: 10.1016/j.zemedi.2010.05.003.Z Med Phys. 2011.PMID: 20888743Free article.German.