KOKitaro OkamotoFollowUsage metrics Co-workers & collaboratorsMWMasahiko WatanabeMasahiko WatanabeKTKeizo TakaoKeizo TakaoJSJuro SakaiJuro SakaiMYMiwako YamasakiMiwako YamasakiKSKoh SasakiKoh SasakiMMMichihiro MiedaMichihiro Mieda