Study protocol for an adaptive, multi-arm, multi-stage (MAMS) randomised controlled trial of brief remotely delivered psychosocial interventions for people with serious mental heal... by Pyle, M, Loftus, L, Emsley, R, Freeman, D, Gillard, S, Gumley, A, Sierpatowska, J, Wood, L, O’Connor, RC, Pfeiffer, P, Simpson, SA, Cockayne, N, Shields, G, Beckley, A, Beckwith, H, Filippidou, M, Glen, C, Allan, S, Hazzard, R, Longden, E, Peel, H, Larsen, M, Bucci, S, Morrison, AP