1. Department of Pathogenic Biology and Medical Immunology, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, Ningxia 750004, China
2. The Center for Reproductive Medicine, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, China
3. Endocrinology Department, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, China
4. Clinical Medical College, Ningxia Medical University, Yinchuan, Ningxia 750004, China
5. Endocrinology Department, Ningxia People’s Hospital, Yinchuan, Ningxia 750002, China
6. College of Traditional Chinese Medicine, Ningxia Medical University, Yinchuan, Ningxia 750004, China