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Bjarnason I, Zanelli G, Smith T, Prouse P, Williams P, Smethurst P, Delacey G, Gumpel MJ, Levi AJ.Bjarnason I, et al. Among authors: williams p.Gastroenterology. 1987 Sep;93(3):480-9. doi: 10.1016/0016-5085(87)90909-7.Gastroenterology. 1987.PMID: 3609658
Bjarnason I, Zanelli G, Prouse P, Williams P, Gumpel MJ, Levi AJ.Bjarnason I, et al. Among authors: williams p.Drugs. 1986;32 Suppl 1:35-41. doi: 10.2165/00003495-198600321-00007.Drugs. 1986.PMID: 3780475
Bjarnason I, Williams P, So A, Zanelli GD, Levi AJ, Gumpel JM, Peters TJ, Ansell B.Bjarnason I, et al. Among authors: williams p.Lancet. 1984 Nov 24;2(8413):1171-4. doi: 10.1016/s0140-6736(84)92739-9.Lancet. 1984.PMID: 6150232
Bjarnason I, Williams P, Smethurst P, Peters TJ, Levi AJ.Bjarnason I, et al. Among authors: williams p.Gut. 1986 Nov;27(11):1292-7. doi: 10.1136/gut.27.11.1292.Gut. 1986.PMID: 3466837Free PMC article.
Williams P, Gumpel M.Williams P, et al.Br Med J. 1980 Oct 11;281(6246):990-2. doi: 10.1136/bmj.281.6246.990.Br Med J. 1980.PMID: 7427555Free PMC article.No abstract available.
Williams P, Gumpel M.Williams P, et al.Br Med J. 1980 Oct 18;281(6247):1048-9. doi: 10.1136/bmj.281.6247.1048.Br Med J. 1980.PMID: 7427571Free PMC article.No abstract available.
Crane M, Joly L, Daly BJ, Gage H, Manthorpe J, Cetrano G, Ford C, Williams P.Crane M, et al. Among authors: williams p.Br J Gen Pract. 2024 Nov 28;74(749):568-572. doi: 10.3399/bjgp24X740217. Print 2024 Dec.Br J Gen Pract. 2024.PMID: 39609068No abstract available.