Integration of psychological interventions in multi-sectoral humanitarian programmes: a systematic review. - Ndlovu, Jacqueline N.; Lind, Jonna; Patlán, Andrés Barrera; Upadhaya, Nawaraj; Leku, Marx R.; Akellot, Josephine; Skovdal, Morten; Augustinavicius, Jura L.; Tol, Wietse A. (BMC Health Services Research, 2024)