Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Mizuho Nakajima and Eiji Hattori and Kazuo Yamada,Association and synergistic interaction between promoter variants of the DRD4 gene in Japanese schizophrenics,Journal of human genetics,14345161,Tokyo : Springer Nature,2007,52,1,86-91,https://cir.nii.ac.jp/crid/1523106605263853824,