1 Letter to the Editor Effectiveness of oral tipepidine administration for children with attention deficit/hyperactivity disorder: A 4‑week, open‑label clinical study Short title: Effectiveness of Tipepidine in ADHD Akemi Tomoda, M.D., Ph.D., 1, 2 * , Shinichiro Takiguchi, M.D. 1, 2 , Takashi X Fujisawa, Ph.D., 1 , Chiho Yatsuga, M.D., Ph.D., 1, 2 , Hirokazu Kumazaki, M.D., 1, 2 , Toru Fujioka, Ph.D., 1,2 , Hitomi Suzuki, Ph.D., 2 , Hideo Matsuzaki, M.D., Ph.D., 1, 2 , Hirotaka Kosaka, M.D., Ph.D., 1, 2 , Shiho Tanaka, Ph.D. 1 1 Research Center for Child Mental Development, University of Fukui, 23‑3 Matsuoka‑Shimoaizuki, Eiheiji‑cho, Fukui 910‑1193, Japan