Bibliographical noteFunding Information:
This paper was prepared by the first author, in collaboration with the second author, based on communication with and data collected by the remaining authors. The authors thank the participants in the study and their parents, and James Teisl for assistance with data management. Dr. Mazzocco received grant support from National Institute of Mental Health Grant RO1 MH50047-02, and from National Institute of Neurological Disorders and Stroke Grant P50 NS 35359. Requests for reprints should be directed to Agata Fiumara, Clinica Pediatrica I, Viale A. Doria 6, Policlinico Dell' Universita di Catania, 95125, Catania, Italy.