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.
Burwell RG, Dangerfield PH.Burwell RG, et al. Among authors: dangerfield ph.Stud Health Technol Inform. 2012;176:3-19.Stud Health Technol Inform. 2012.PMID: 22744448Review.
Burwell RG, Dangerfield PH, Moulton A, Anderson SI.Burwell RG, et al. Among authors: dangerfield ph.Stud Health Technol Inform. 2008;140:197-207.Stud Health Technol Inform. 2008.PMID: 18810025Review.