1 Emory Adolescent Substance Abuse Treatment Services, Emory University School of Medicine, Atlanta, Georgia; justine.welsh@emory.edu.
2 Center for Adolescent Substance Abuse Research, Division of Developmental Medicine, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, Massachusetts.
3 Division of General Pediatrics, Department of Pediatrics, Boston University School of Medicine, Boston, Massachusetts; and.
4 Department of Pediatrics, Boston Medical Center, Boston, Massachusetts.