1. Graduate School, Liaoning University of Traditional Chinese Medicine, 79 Chongshan East Road, Shenyang 110847, P.R. China
2. First Department of Cardiology, The Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, 33 Beiling Avenue, Shenyang 110032, P.R. China
3. Standardization Office, The Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, 33 Beiling Avenue, Shenyang 110032, P.R. China