1. Department of Emergency Medicine Benioff Children's Hospitals University of California San Francisco San Francisco California USA
2. Department of Psychiatry University of Michigan Ann Arbor Michigan USA
3. Department of Psychiatry University of Pittsburgh Pittsburgh Pennsylvania USA
4. Department of Pediatrics Columbia University New York New York USA
5. Department of Pediatrics University of Texas Southwestern Dallas Texas USA
6. Data Coordinating Center University of Utah Salt Lake City Utah USA