1. Department of Child Neurology, National Musashi Institute for Mental and Nervous Disorders, Kodaira City, Tokyo
2. Department of Child Neurology, National Musashi Institute for Mental and Nervous Disorders, Kodaira City, Tokyo, National Center for Nervous, Mental and Muscular Disorders, Kodaira City, Tokyo
3. National Center for Nervous, Mental and Muscular Disorders, Kodaira City, Tokyo
4. Department of Pediatrics, National Nagara Hospital, Gifu, Japan