Psychosocial and pharmacological treatment of patients following deliberate self-harm: the methodological issues involved in evaluating effectiveness. by Arensman, E, Townsend, E, Hawton, K, Bremner, S, Feldman, E, Goldney, R, Gunnell, D, Hazell, P, Van Heeringen, K, House, A, Owens, D, Sakinofsky, I, Träskman-Bendz, L