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