1. Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan, University of South China, Hengyang, Hunan 421001, P.R. China
2. Department of Basic Nursing, Yiyang Medical College, Yiyang, Hunan 413000, P.R. China
3. Cyrus Tang Hematology Center (Research Partnership), Jiangsu Institute of Hematology, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu 215400, P.R. China
4. Department of Cardiovascular Medicine, The Second Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China