Wendt, Janine; Scheller, Daniel A.; Flechtner-Mors, Marion; Meshkovska, Biljana; Luszczynska, Aleksandra; Lien, Nanna; Forberger, Sarah; Banik, Anna; Lobczowska, Karolina; Steinacker, Jürgen M.
Titel:
Barriers and facilitators to the adoption of physical activity policies in elementary schools from the perspective of principals: An application of the consolidated framework for implementation research–A cross-sectional study