Does digital, multimedia information increase recruitment and retention in a children’s wrist fracture treatment trial, and what do people think of it? A randomised controlled Stud... by Moe-Byrne, T, Knapp, P, Perry, D, Achten, J, Spoors, L, Appelbe, D, Roche, J, Martin-Kerry, JM, Sheridan, R, Higgins, S