Moderate-to-vigorous group aerobic exercise versus group leisure activities for mild-to-moderate depression in adolescents: study protocol for a multicentre randomised controlled t... oleh Carl Johan Sundberg, Andreas Ivarsson, Ingrid Larsson, Eva Serlachius, Maria Lalouni, Fabian Lenhard, Håkan Jarbin, Rebecca Mortazavi, Jessica Norrbom, Emma Haglund, Tina Cronqvist, Kristina Ingemarsson, Åsa Mårsell, Olof Rask, Rebecca Andersson