1. Department of Child Neurology National Center Hospital for Mental, Nervous and Muscular Disorders National Center of Neurology and Psychiatry Kodaira, Tokyo, Japan
2. National Institute of Neuroscience Kodaira, Tokyo, Japan
3. National Sanatorium Sengokusou Hospital Kaizuka, Osaka, Japan
4. Department of Pediatrics School of Medicine University of Tokushima Tokushima, Japan
5. Department of Child Neurology National Center Hospital for Mental, Nervous and Muscular Disorders National Center of Neurology and Psychiatry National Institute of Neuroscience Kodaira, Tokyo, Japan