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Hackett G, Kell P, Ralph D, Dean J, Price D, Speakman M, Wylie K; British Society for Sexual Medicine.Hackett G, et al. Among authors: kell p.J Sex Med. 2008 Aug;5(8):1841-65. doi: 10.1111/j.1743-6109.2008.00773.x. Epub 2008 Feb 21.J Sex Med. 2008.PMID: 18298470
Donatucci C, Eardley I, Buvat J, Gittelman M, Kell P, Segerson T, Homering M, Montorsi F; Vardenafil Study Group.Donatucci C, et al. Among authors: kell p.J Sex Med. 2004 Nov;1(3):301-9. doi: 10.1111/j.1743-6109.04043.x.J Sex Med. 2004.PMID: 16422960Clinical Trial.
Carne CA, Foley E, Rowen D, Kell P, Maw R; British Co-operative Clinical Group of the Medical Society for the Study of Venereal Diseases.Carne CA, et al. Among authors: kell p.Sex Transm Infect. 2003 Jun;79(3):240-2. doi: 10.1136/sti.79.3.240.Sex Transm Infect. 2003.PMID: 12794212Free PMC article.
Rutland E, Foley E, O'Mahony C, Miller RF, Maw R, Kell P, Rowen D; British Co-operative Clinical Group of British Association of Sexually Transmitted Infections and HIV.Rutland E, et al. Among authors: kell p.Sex Transm Infect. 2007 Apr;83(2):151-4. doi: 10.1136/sti.2006.023176. Epub 2007 Jan 17.Sex Transm Infect. 2007.PMID: 17229793Free PMC article.