1. A cluster randomised controlled trial to evaluate the effectiveness and cost-effectiveness of the GoActive intervention to increase physical activity among adolescents aged 13–14 years. Issue 9 (27th September 2017) Authors: Brown, Helen Elizabeth; Whittle, Fiona; Jong, Stephanie T; Croxson, Caroline; Sharp, Stephen J; Wilkinson, Paul; Wilson, Edward CF; van Sluijs, Esther MF; Vignoles, Anna; Corder, Kirsten Journal: BMJ open Issue: Volume 7:Issue 9(2017) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗