1. Department of Cardiology, Tangshan Gongren Hospital Affiliated of North China University of Science and Technology, Tangshan, Hebei 063000, P.R. China
2. Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, Jilin 133002, P.R. China
3. Chronic Diseases Research Center, Medical College, Dalian University, Dalian, Liaoning 116622, P.R. China