Evaluating the scaling up of an effective implementation intervention (PACE) to increase the delivery of a mandatory physical activity policy in primary schools. - Hall, Alix; Lane, Cassandra; Wolfenden, Luke; Wiggers, John; Sutherland, Rachel; McCarthy, Nicole; Jackson, Rebecca; Shoesmith, Adam; Lecathelinais, Christophe; Reeves, Penny; Bauman, Adrian; Gillham, Karen; et al. (International Journal of Behavioral Nutrition & Physical Activity, 2023)