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Rusby JE, Waters RA, Nightingale PG, England DW.Rusby JE, et al.Ann R Coll Surg Engl. 2010 Apr;92(3):193-7. doi: 10.1308/003588410X12628812458770. Epub 2010 Mar 10.Ann R Coll Surg Engl. 2010.PMID: 20223055Free PMC article.