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Lee CH, Spence RA, Upadhyaya M, Morrison PJ.Lee CH, et al. Among authors: spence ra.BMJ Case Rep. 2011 Feb 17;2011:bcr1020103395. doi: 10.1136/bcr.10.2010.3395.BMJ Case Rep. 2011.PMID: 22707495Free PMC article.
Cox MR, Lawson JT, Spence RA.Cox MR, et al. Among authors: spence ra.Aust N Z J Surg. 1991 May;61(5):399-400. doi: 10.1111/j.1445-2197.1991.tb00245.x.Aust N Z J Surg. 1991.PMID: 2025198
O'Donnell ME, Gibson N, Sharif MA, Spence RA, Lee J.O'Donnell ME, et al. Among authors: spence ra.Ir J Med Sci. 2008 Dec;177(4):401-3. doi: 10.1007/s11845-007-0080-4. Epub 2007 Aug 18.Ir J Med Sci. 2008.PMID: 17705042