1. Department of Psychiatry, University of California, San Diego, La Jolla, California
2. Eastern Virginia Medical School, Norfolk, Virginia
3. Graduate School of Education, Stanford University, Palo Alto, California
4. Department of Pediatrics, University of Southern California, Los Angeles, California
5. Department of Pediatrics, Children's Hospital Los Angeles, Los Angeles, California
6. Department of Psychology, Florida International University, Miami, Florida
7. National Institute on Drug Abuse, Rockville, Maryland
8. Department of Psychology, Yale University, New Haven, Connecticut
9. Department of Psychology, University of California, San Diego, La Jolla, California