M Kelly, J. N Egbunike, P Kinnersley, K Hood, E Owen Jones, L. A Button, C Shaw, A Porter, H Snooks, S Bowden and A. Edwards
Family Practice 27 ( 6 ): 652 - 663 , 2010
P Kinnersley, J. N Egbunike, M Kelly, K Hood, E Owen Jones, L. A Button, C Shaw, A Porter, H Snooks, S Bowden and A. Edwards
Family Practice 27 ( 6 ): 664 - 672 , 2010