1. Stanford University, Stanford, California.
2. University of South Florida, St. Petersburg, Florida.
3. Yale University, New Haven, Connecticut.
4. Massachusetts General Hospital, Boston, Massachusetts.
5. Harvard Medical School, Boston, Massachusetts.
6. University of Minnesota, Minneapolis, Minnesota.
7. Nemours, Alfred I dupont Hospital for Children, Wilmington, Delaware.
8. National Institute of Mental Health, Bethesda, Maryland.