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Clifton N, Harrison L, Bradley PJ, Jones NS.Clifton N, et al.J Laryngol Otol. 2011 May;125(5):479-85. doi: 10.1017/S0022215110002720. Epub 2011 Jan 21.J Laryngol Otol. 2011.PMID: 21255478Review.
Edmond M, Clifton N, Khalil H.Edmond M, et al. Among authors: clifton n.Eur Arch Otorhinolaryngol. 2011 Feb;268(2):315-8. doi: 10.1007/s00405-010-1447-0. Epub 2010 Dec 4.Eur Arch Otorhinolaryngol. 2011.PMID: 21132319
Khalil HS, Eweiss AZ, Clifton N.Khalil HS, et al. Among authors: clifton n.BMC Ear Nose Throat Disord. 2011 May 7;11:4. doi: 10.1186/1472-6815-11-4.BMC Ear Nose Throat Disord. 2011.PMID: 21548971Free PMC article.
Clifton NJ, Raghavan U, Birkin J, Jones NS.Clifton NJ, et al.Postgrad Med J. 2009 Jul;85(1005):347-51. doi: 10.1136/pgmj.2008.076059.Postgrad Med J. 2009.PMID: 19581243