Relapse prevention therapy for internet gaming disorder in Swedish child and adolescent psychiatric clinics: a randomized controlled trial oleh Frida André, Sabina Kapetanovic, Isak Einarsson, Isak Einarsson, Sunna Trebbin Harvard, Leonard Franzén, Annika Möttus, Anders Håkansson, Anders Håkansson, Emma Claesdotter-Knutsson, Emma Claesdotter-Knutsson