Evaluating Delivery of a CBT-Based Group Intervention for Schoolchildren With Emotional Problems: Examining the Reliability and Applicability of a Video-Based Adherence and Competence Measure. - Rasmussen LP; Patras J; Handegård BH; Neumer SP; Martinsen KD; Adolfsen F; Sund AM; Martinussen M (Frontiers in psychology, 2021)