The impact of an implementation intervention that increased school's delivery of a mandatory physical activity policy on student outcomes: A cluster-randomised controlled trial

- Hall, Alix; Wolfenden, Luke; Trost, Stewart G.; Nathan, Nicole; Shoesmith, Adam; McCarthy, Nicole; Wiggers, John; Bauman, Adrian E.; Rissel, Chris; Sutherland, Rachel; Lecathelinais, Christophe; Brown, Hannah