1. Department of General Internal Medicine, The First Hospital of Jilin University, Changchun, Jilin Province, P. R. China
2. Department of Cardiology, The First Hospital of Jilin University, Changchun, Jilin Province, P. R. China
3. Sino-German Laboratory for Molecular Medicine, State Key Laboratory of Cardiovascular Disease, FuWai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing P. R. China