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.
Griffin N, Allen D, Wort J, Rubens M, Padley S.Griffin N, et al. Among authors: allen d.Clin Radiol. 2007 Jun;62(6):587-95. doi: 10.1016/j.crad.2007.01.013. Epub 2007 Apr 5.Clin Radiol. 2007.PMID: 17467397
Maher TM, Gat M, Allen D, Devaraj A, Wells AU, Geddes DM.Maher TM, et al. Among authors: allen d.Thorax. 2008 Jun;63(6):542-8. doi: 10.1136/thx.2007.086405. Epub 2007 Nov 16.Thorax. 2008.PMID: 18024534Free PMC article.
DiGuiseppi C, Roberts I, Li L, Allen D.DiGuiseppi C, et al. Among authors: allen d.BMJ. 1998 May 9;316(7142):1426-8. doi: 10.1136/bmj.316.7142.1426.BMJ. 1998.PMID: 9572753Free PMC article.No abstract available.