A randomised controlled feasibility study of interpersonal art psychotherapy for the treatment of aggression in people with intellectual disabilities in secure care. - Hackett SS; Zubala A; Aafjes-van Doorn K; Chadwick T; Harrison TL; Bourne J; Freeston M; Jahoda A; Taylor JL; Ariti C; McNamara R; Pennington L; et al. (Pilot and feasibility studies, 2020)