1. Department of Cardiology, the Second Affiliated Hospital of Kunming Medical University, Kunming 650101, P. R. China
2. Yunnan Key Laboratory of Stem Cell and Regenerative Medicine, Science and Technology Achievement Incubation Center, Kunming Medical University, Kunming 650500, P. R. China
3. Faculty of Basic Medical Science, Kunming Medical University, Kunming 650500, P. R. China
4. Yunnan Key Laboratory of Innovative Application of Traditional Chinese Medicine, Department of Cardiovascular Surgery, the First People's Hospital of Yunnan Province, the Affiliated Hospital of Kunming University of Science and Technology, Kunming 650100, P. R. China