1 Dr. Martin is with the Yale Child Study Center; Dr. Faraone is with the State University of New York Upstate; Dr. Henderson is with Columbia University; Dr. Hudziak is with the University of Vermont; Dr. Leibenluft is with the National Institute of Mental Health; Dr. Piacentini is with the University of California-Los Angeles; Dr. Stein is with the University of Pittsburgh; Dr. Todd with Washington Univesity, St. Louis; and Dr. Walkup is with the Johns Hopkins University School of Medicine.