1. Research Center for Child Mental Development, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
2. Research Program for Carbon Ion Therapy and Diagnostic Imaging Research, Center for Charged Particle Therapy, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
3. Department of Judo Therapy and Medical Science, Nippon Sport Science University, 7-1-1 Fukuzawa, Setagaya-ku, Tokyo 158-8508, Japan