1. Department of Metabolism and Endocrinology, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China
2. Clinical Anatomy & Reproductive Medicine Application Institute, Hengyang Medical School, University of South China, Hengyang 421001, China
3. Department of Laboratory Medicine, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China
4. Institute Center of Clinical Medicine, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China