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.
Waters AM, Tudur Smith C, Young B, Jones TM.Waters AM, et al. Among authors: young b.Trials. 2014 May 13;15:168. doi: 10.1186/1745-6215-15-168.Trials. 2014.PMID: 24885068Free PMC article.
Bower P, Brueton V, Gamble C, Treweek S, Smith CT, Young B, Williamson P.Bower P, et al. Among authors: young b.Trials. 2014 Oct 16;15:399. doi: 10.1186/1745-6215-15-399.Trials. 2014.PMID: 25322807Free PMC article.Review.