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.
Chalmers N, Redhead DN, Simpson KJ, Hayes PC.Chalmers N, et al. Among authors: hayes pc.Clin Radiol. 1992 Sep;46(3):166-9. doi: 10.1016/s0009-9260(05)80438-6.Clin Radiol. 1992.PMID: 1395420
Plevris JN, Hayes PC, Harrison DJ, Bouchier IA.Plevris JN, et al. Among authors: hayes pc.Gut. 1992 Apr;33(4):554-9. doi: 10.1136/gut.33.4.554.Gut. 1992.PMID: 1582602Free PMC article.
Hayes PC, May L, Hayes JD, Harrison DJ.Hayes PC, et al. Among authors: hayes jd.Gut. 1991 Dec;32(12):1546-9. doi: 10.1136/gut.32.12.1546.Gut. 1991.PMID: 1663474Free PMC article.
O'Carroll RE, Hayes PC, Ebmeier KP, Dougall N, Murray C, Best JJ, Bouchier IA, Goodwin GM.O'Carroll RE, et al. Among authors: hayes pc.Lancet. 1991 May 25;337(8752):1250-3. doi: 10.1016/0140-6736(91)92920-w.Lancet. 1991.PMID: 1674063
Hayes PC, Davis JM, Lewis JA, Bouchier IA.Hayes PC, et al.Lancet. 1990 Jul 21;336(8708):153-6. doi: 10.1016/0140-6736(90)91668-z.Lancet. 1990.PMID: 1973480