TI - TOpic collections PT - JOUR DP - 2007 TA - Archives of Pediatrics & Adolescent Medicine pages = {834}, VI - 161 IP - 9 AID - 10.1001/archpedi.161.9.834 [doi] 4100 - http://dx.doi.org/10.1001/archpedi.161.9.834 SO - Archives of Pediatrics & Adolescent Medicine September 1, 2007 161(9):834