PT - JOURNAL ARTICLE AU - Vincent Busch AU - Paulus A J van Opdorp AU - Joshua Broek AU - Irene A Harmsen TI - Bright spots, physical activity investments that work: JUMP-in: promoting physical activity and healthy nutrition at primary schools in Amsterdam AID - 10.1136/bjsports-2017-097713 DP - 2018 Oct 01 TA - British Journal of Sports Medicine PG - 1299--1301 VI - 52 IP - 20 4099 - http://bjsm.bmj.com/content/52/20/1299.short 4100 - http://bjsm.bmj.com/content/52/20/1299.full SO - Br J Sports Med2018 Oct 01; 52