Feasibility and Preliminary Outcomes of a Digital Intervention for Gaming-Related Problems and Well-Being: A Quasi-Experimental Study. - Marjamaa, Natalia; Hylkilä, Krista; Kääriäinen, Maria; Palomäki, Jussi; Behm, Sanni; Peltonen, Aino; Konttila, Jenni; Männikkö, Niko (Nordic Studies on Alcohol & Drugs / Nordisk Alkohol- & Narkotikatidskrift, 2026)