Does dose matter? Parental attendance in a preventive intervention for anxious and sad children - Bania, Elisabeth Valmyr; Ytreland, Kristin; Sund, Anne Mari; Lydersen, Stian; Neumer, Simon Peter; Adolfsen, Frode; Martinsen, Kristin; Rasmussen, Lene-Mari Potulski; Ingul, Jo Magne (BMC Psychology, 2024)