AU - Dunton G, McConnell R, Jerrett M, et al TI - ORganized physical activity in young school children and subsequent 4-year change in body mass index PT - JOUR DP - 2012 TA - Archives of Pediatrics & Adolescent Medicine pages = {713-718}, VI - 166 IP - 8 AID - 10.1001/archpediatrics.2012.20 [doi] 4100 - http://dx.doi.org/10.1001/archpediatrics.2012.20 SO - Archives of Pediatrics & Adolescent Medicine August 1, 2012 166(8):713