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.
Beets-Tan RG, Beets GL, Vliegen RF, Kessels AG, Van Boven H, De Bruine A, von Meyenfeldt MF, Baeten CG, van Engelshoven JM.Beets-Tan RG, et al.Lancet. 2001 Feb 17;357(9255):497-504. doi: 10.1016/s0140-6736(00)04040-x.Lancet. 2001.PMID: 11229667Clinical Trial.