Effectiveness of group-delivered cognitive behavioural therapy for insomnia in primary care: a pragmatic, multicentre randomised controlled trial. - Hrozanova, Maria; Skarpsno, Eivind Schjelderup; Follestad, Turid; Kallestad, Håvard; Pallesen, Ståle; Nordstoga, Anne Lovise; Møllerløkken, Nina Elise; Rønning, Astrid Sletteng; Meisingset, Ingebrigt (Sleep Medicine, 2025)