1. Department of Ultrasonography, Affiliated Hospital of Inner Mongolia Minzu University, Tongliao, 028000 Inner Mongolia, China
2. Inner Mongolia Engineering and Technical Research Center for Personalized Medicine, Tongliao, 028000 Inner Mongolia, China
3. Department of Obstetrics, Affiliated Hospital of Inner Mongolia Minzu University, Tongliao, 028000 Inner Mongolia, China
4. Genetic Testing Center, Affiliated Hospital of Inner Mongolia Minzu University, Tongliao, 028000 Inner Mongolia, China
5. College of Life Sciences and Food Engineering of Inner Mongolia Minzu University, Tongliao, 028000 Inner Mongolia, China