1. Department of Clinical Laboratory, The No. 901 Hospital of the Joint Service of the People’s Liberation Army, Hefei, P.R. China;
2. Beijing Chigene Translational Medicine Research Center, Beijing, P. R. China;
3. Department of Obstetrics and Gynecology, The No. 901 Hospital of the Joint Service of the People’s Liberation Army, Hefei, P. R. China;
4. Department of Radiology, Anhui Provincial Children’s Hospital, Hefei, P. R. China;
5. Department of Radiology, The No. 901 Hospital of the Joint Service of the People’s Liberation Army, Hefei, P. R. China