Undertaking studies within a trial to evaluate recruitment and retention strategies for RCTs: lessons learnt from the PROMETHEUS research programme by Parker, A, Arundel, C, Clark, L, Coleman, E, Doherty, L, Hewitt , CE, Beard, D, Bower, P, Cooper, C, Culliford, L, Devane, D, Emsley, R, Eldridge, S, Galvin, S, Gillies, K, Montgomery, A, Sutton, CJ, Treweek, S, Torgerson, DJ

Staff training to improve participant recruitment into surgical randomised controlled trials: A feasibility study within a trial (SWAT) across four host trials simultaneously by Parker, A, Arundel, C, Mills, N, Rooshenas, L, Jepson, M, Donovan, JL, Blazeby, JM, Coleman, E, Clark, L, Doherty, L, Hewitt, CE, Partha Sarathy, P, Beard, D, Bower, P, Brealey, S, Brocklehurst, P, Cooper, C, Croft, J, Culliford, L, Dias, J, Devane, D, Eldridge, S, Emsley, R, Galvin, S, Gemperle-Mannion, E, Jayne, DG, Metcalfe, AJ, Montgomery, A, Rangan, A, Sutton, CJ, Tharmanathan, P, Treweek, S, Torgerson, D