Atsushi Sato^1,2, MIHO TANAKA^2,3,4, SHINYA KASAI², YOKO HAGINO², HIROKO KOTAJIMA², HIROFUMI KASHII^2,5, YASUMASA NISHITO⁶, MASUMI INAGAKI⁴, ICHIRO SORA⁷, MASASHI MIZUGUCHI⁸, KAZUTAKA IKEDA^2,3 (1.Department of Pediatrics, The University of Tokyo Hospital, Tokyo, Japan, 2.Addictive Substance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan, 3.Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan, 4.Department of Developmental Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry, Kodaira, Japan)

Keisuke Wakusawa^1,2,3, TAKAHIRO NARA³, CHIEKO NARA⁴, YUKI KUBOTA⁴, SHIGEO KURE⁴, HIROYUKI YOKOYAMA⁵ (1.Research Center for Child Mental Development, Hamamatsu University School of Medicine, Hamamatsu, Japan, 2.Department of Advanced brain science, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan, 3.Department of developmental psychiatry, Miyagi Children's hospital, Sendai, Japan, 4.Department of Pediatrics, Tohoku University School of Medicine, Sendai, Japan)

Kaoru Moriyama^1,2, AKIKO FUJII¹, MITSUHIRO MATSUO¹, MUTSUKO MIYAZAKI¹, TAMAO NAGAOKA¹, KAZUNORI MOTOYAMA¹, HIROYUKI MORIUCHI² (1.Nagasaki Prefectual Children's Medical Welfare Center, Japan, 2.Nagasaki University Hospital, Japan)

Shigeru Hanaoka (Matsudo Municipal Center for Child Development, Matsudo-city Japan)

Saeko Sasaki, TOMOHIRO KUMADA, MINORU SHIBATA, FUMIHITO NOZAKI, IKUKO HIEJIMA, ANRI HAYASHI, MIOKO MORI, KENJI INOUE, TATSUYA FUJII (Shiga Medical Center for Children,Shiga,Japan)

Takeshi Miyamoto (Department of Pediatrics, Hamamatsu Medical Center, Shizuoka, Japan)