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Fisher JM, Gordon AL, MacLullich AM, Tullo E, Davis DH, Blundell A, Field RH, Teodorczuk A.Fisher JM, et al.Age Ageing. 2015 Jan;44(1):166-70. doi: 10.1093/ageing/afu154. Epub 2014 Oct 16.Age Ageing. 2015.PMID: 25324329Free PMC article.