1. Department of Pathology, Harbin Medical University, Harbin, China
2. Department of Obstetrics and Gynecology, First Affiliated Hospital of Harbin Medical University, Harbin, China
3. Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, China
4. Department of Cardiovascular Disease, Inner Mongolia People's Hospital, Hohhot, China
5. College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China