1. Department of Child and Adolescent Psychiatry, Faculty of Medicine, Hokkaido University, Sapporo, Japan.
2. Project Management Department, Shionogi & Co., Ltd., Osaka, Japan.
3. Biostatistics Center, Shionogi & Co., Ltd., Osaka, Japan.
4. Neuroscience and Pain Products, Bio-Medicines and Clinical Pharmacology Medical, Japan Drug Development and Medical Affairs, Eli Lilly Japan, Kobe, Japan.
5. Department of Psychiatry, Tokai University School of Medicine, Kanagawa, Japan.