Department of Obstetrics and Gynecology Wujin Hospital Affiliated with Jiangsu University Changzhou Jiangsu 213017 China;
Department of Obstetrics and Gynecology The Wujin Clinical College of Xuzhou Medical University Changzhou Jiangsu 213017 China;
Department of Laboratory Medicine Nanjing Drum Tower Hospital Nanjing University Medical School Nanjing Jiangsu 210008 China;
Department of Laboratory Medicine Nanjing Drum Tower Hospital Nanjing University Medical School Nanjing Jiangsu 210008 China;
Department of Infectious Diseases Nanjing Drum Tower Hospital Nanjing University Medical School Nanjing Jiangsu 210008 China;