S Robinson, H Syddall, K Jameson, S Batelaan, H Martin, E. M Dennison, C Cooper, A. A Sayer and The Hertfordshire Study Group
Age and Ageing 38 ( 5 ): 594 - 599 , 2009
D. C Dearborn, L. S MacDade, S Robinson, A. D Dowling Fink and M. L. Fink
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