title: [Present status and future directions of clinical trial registration].
authors.forename: Takahiro
authors.initials: T
authors.lastname: Kiuchi
mesh_terms: D002986:Clinical Trials as Topic / Q000379:methods / Q000592:standards* / Q000639:trends*; D005544:Forecasting; D006801:Humans; D020407:Internet; D007564:Japan; D011643:Publishing; D012042:Registries / Q000592:standards*