RT Journal T1 ABout this journal JF Archives of Pediatrics & Adolescent Medicine JO Archives of Pediatrics & Adolescent Medicine YR 2009 FD January 5 VO 163 IS 1 SP 4 OP 4 DO 10.1001/archpedi.163.1.4 UL http://dx.doi.org/10.1001/archpedi.163.1.4 AB