1. Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati, College of Medicine, Cincinnati, Ohio.
2. Division of Child and Adolescent Psychiatry, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
3. Department of Economics, Carl H. Lindner College of Business, University of Cincinnati, Cincinnati, Ohio.
4. Department of Pediatrics, University of Utah, Salt Lake City, Utah.
5. Department of Psychiatry and Psychology, Mayo Clinic, Rochester, Minnesota.