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