1. Division of Child and Adolescent Psychiatry, Department of Psychiatry, University of Minnesota Medical School, Minneapolis, Minnesota.
2. Departments of Pediatrics and Emergency Medicine, Medical School, University of Minnesota, Minneapolis, Minnesota.
3. Psychology Department, College of Liberal Arts, University of Minnesota, Minneapolis, Minnesota.
4. Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, Minnesota.
5. Hennepin County Medical Center, Minneapolis, Minnesota.
6. Mayo Clinic, Rochester, Minnesota.