M. P Tan, J. L Newton, P Reeve, A Murray, T. J Chadwick and S. W. Parry
Age and Ageing 38 ( 6 ): 680 - 686 , 2009
S. W Parry, M Norton, J Pairman, M Baptist, K Wilton, P Reeve, K Sutcliffe and J. L. Newton
Age and Ageing 38 ( 6 ): 718 - 723 , 2009