1. Department of Endocrinology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
2. Department of Center Laboratory, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510000, P.R. China
3. Department of Anesthesiology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
4. Department of Cardiovascular Medicine, Xiangya Hospital Central South University, Changsha, Hunan 410008, P.R. China