1. Department of Cardiology, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan 610072, P.R. China
2. Department of Neurosurgery, North Sichuan Medical College, Nanchong, Sichuan 637000, P.R. China
3. Clinical Research Center, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550000, P.R. China
4. Department of Vascular Surgery, Deyang People's Hospital, Deyang, Sichuan 618000, P.R. China