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.
Singleton A, Smith F, Harris T, Ross-Harper R, Hilton S.Singleton A, et al. Among authors: harris t.Med Educ. 1999 Jan;33(1):34-41. doi: 10.1046/j.1365-2923.1999.00264.x.Med Educ. 1999.PMID: 10211275
Shah S, Harris TJ, Rink E, DeWilde S, Victor CR, Cook DG.Shah S, et al. Among authors: harris tj.Br J Gen Pract. 2001 Mar;51(464):223-5.Br J Gen Pract. 2001.PMID: 11255905Free PMC article.Clinical Trial.