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Jalan R, Forrest EH, Redhead DN, Dillon JF, Hayes PC.Jalan R, et al. Among authors: hayes pc.Gut. 1997 May;40(5):664-70. doi: 10.1136/gut.40.5.664.Gut. 1997.PMID: 9203948Free PMC article.
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.
Harrison DJ, May L, Hayes PC, Haque MM, Hayes JD.Harrison DJ, et al. Among authors: hayes pc, hayes jd.Gut. 1990 Aug;31(8):909-12. doi: 10.1136/gut.31.8.909.Gut. 1990.PMID: 2387516Free PMC article.
Hayes PC, Harrison DJ, Bouchier IA, McLellan LI, Hayes JD.Hayes PC, et al. Among authors: hayes jd.Gut. 1989 Jun;30(6):854-9. doi: 10.1136/gut.30.6.854.Gut. 1989.PMID: 2753409Free PMC article.
Westaby D, Gimson A, Hayes PC, Williams R.Westaby D, et al. Among authors: hayes pc.Gut. 1988 Mar;29(3):372-7. doi: 10.1136/gut.29.3.372.Gut. 1988.PMID: 3128465Free PMC article.Clinical Trial.