1. Department of Hypertension, The Affiliated Hospital of Guizhou Medical University, Guiyang, P.R. China
2. Department of Cardiology, The Affiliated Hospital of Guizhou Medical University, Guiyang, P. R. China
3. Department of Interventional Radiology, The Affiliated Hospital of Guizhou Medical University, Guiyang, P.R. China
4. Department of Cardiology, Guihang 302 Hospital, Anshun, P.R. China