RT Journal T1 ABout this journal JF Archives of Pediatrics & Adolescent Medicine JO Archives of Pediatrics & Adolescent Medicine YR 2009 FD March 2 VO 163 IS 3 SP 198 OP 198 DO 10.1001/archpedi.163.3.198 UL http://dx.doi.org/10.1001/archpedi.163.3.198 AB