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.
Davison AM, Williams IR, Mawdsley C, Robson JS.Davison AM, et al. Among authors: robson js.Br Med J. 1972 Feb 12;1(5797):409-11. doi: 10.1136/bmj.1.5797.409.Br Med J. 1972.PMID: 4333484Free PMC article.
Davison AM, Thomson D, Robson JS.Davison AM, et al. Among authors: robson js.Br Med J. 1973 Mar 17;1(5854):654-5. doi: 10.1136/bmj.1.5854.654.Br Med J. 1973.PMID: 4692710Free PMC article.No abstract available.