1. The First Affiliated Hospital of Kunming Medical University, Kunming 650031,China; 2. The Second Affiliated Hospital of Kunming Medical University, Kunming 650032, China
National Natural Science Foundation of China (81260145; 81560159); The Scientific Returned Chinese Scholars (SRF for ROCS), State Education Ministry (SEM); Overseas Students Science and Technology Activities Project Merit Funding; Research Fund Yunnan Provincial Department of Education(2012Y016)