title: Searching additional databases except PubMed are necessary for a systematic review.
authors.forename: Ming-Hua
authors.initials: MH
authors.lastname: Zheng
authors.forename: Xu
authors.initials: X
authors.lastname: Zhang
authors.forename: Qiang
authors.initials: Q
authors.lastname: Ye
authors.forename: Yong-Ping
authors.initials: YP
authors.lastname: Chen
mesh_terms: D017130:Angioplasty; D016208:Databases, Factual; D006801:Humans; D039781:PubMed; D012196:Review Literature as Topic; D020521:Stroke / Q000628:therapy*