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.
Craig JJ, Mulholland DA, Gibson JM.Craig JJ, et al. Among authors: mulholland da.Ulster Med J. 2001 May;70(1):31-5.Ulster Med J. 2001.PMID: 11428322Free PMC article.
Williams MA, McMullan R, Hedderwick S, Mulholland DA, Best RM.Williams MA, et al. Among authors: mulholland da.Ophthalmologica. 2006;220(2):134-6. doi: 10.1159/000090580.Ophthalmologica. 2006.PMID: 16491038