Context, implementation and mechanisms of impact of a stepped-care WHO psychological intervention for migrants with psychological distress - Compri, Beatrice; Turrini, Giulia; Purgato, Marianna; Bryant, Richard; Cristobal, Paula; Haro, Josep Maria; Kalisch, Raffael; Lorant, Vincent; McDaid, David; McGreevy, Kerry R; Mediavilla, Roberto; Nose, Michela; et al. (CAMBRIDGE PRISMS-GLOBAL MENTAL HEALTH, 2025)