1 Division of Adolescent Medicine, Department of Pediatrics, University of Michigan, Ann Arbor, Michigan. Electronic address: alanako@med.umich.edu.
2 Departments of Family Medicine and Pediatrics, Uniformed Services University, Bethesda, Maryland; Department of Family Medicine, David Grant Medical Center, Travis Air Force Base, California.
3 Division of Developmental-Behavioral Pediatrics, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas.
4 Department of Population and Family Health, Columbia University Mailman School of Public Health, New York, New York; Department of Pediatrics, Columbia University College of Physicians and Surgeons, New York, New York.
5 The Potocsnak Family Division of Adolescent and Young Adult Medicine, Northwestern University Feinberg School of Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois.
6 Department of Pediatrics, Section of Adolescent Medicine, Alberta Children's Hospital, Calgary, Alberta, Canada; Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
7 Division of Adolescent & Young Adult Medicine, Department of Pediatrics, University of California, Los Angeles, Los Angeles, California.