1. Department of Neurosurgery; Stanford University School of Medicine; Stanford California USA
2. Department of Neurosurgery; Huashan Hospital; Fudan University; Shanghai China
3. Department of Neurosurgery; Shanghai Jingan District Central Hospital; Shanghai China
4. Department of Neurosurgery; Xuanwu Hospital; Capital Medical University; Beijing China
5. Stanford Stroke Center; Stanford University School of Medicine; Stanford California USA