Zhang Weiwei, Zhu Chen, Sun Mengwen, Ge Yuhao, Yan Guang
Department of Geriatrics, Affiliated Provincial Hospital of Anhui Medical University, Hefei, China.
Department of Orthopaedic Surgery, Affiliated Provincial Hospital of Anhui Medical University, Hefei, China.
J Stroke Cerebrovasc Dis. 2014 Nov-Dec;23(10):2714-2724. doi: 10.1016/j.jstrokecerebrovasdis.2014.06.022. Epub 2014 Oct 12.
This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). This article has been retracted at the request of the Editor-in-Chief. This paper includes a meta-analysis based on papers by another author group that have since been retracted. Researchers can be misled by reading this paper, thus we have retracted it.