TI - SIgn up for alerts—it’s free! PT - JOUR DP - 2006 TA - Archives of Pediatrics & Adolescent Medicine pages = {299}, VI - 160 IP - 3 AID - 10.1001/archpedi.160.3.299 [doi] 4100 - http://dx.doi.org/10.1001/archpedi.160.3.299 SO - Archives of Pediatrics & Adolescent Medicine March 1, 2006 160(3):299