1. Department of Cardiology The Second Hospital of Hebei Medical University Shijiazhuang HeBei China
2. The Hebei Institute of Cardiovascular and Cerebrovascular Diseases (YL) Shijiazhuang China
3. Department of Neurosurgery The Second Hospital of Hebei Medical University Shijiazhuang China
4. The Graduate School GuiZhou medical university GuiYang China