1. State Key Laboratory of Organ Failure Research Guangdong Provincial Key Laboratory of Viral Hepatitis Research Department of Infectious Diseases Nanfang Hospital Southern Medical University Guangzhou China
2. Department of Infectious Diseases Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University) Changsha Hunan Province China
3. Department of Obstetrics Guangdong Second Provincial General Hospital Guangzhou China
4. Department of Obstetrics and Gynecology Zengcheng Branch Nanfang Hospital Southern Medical University Guangzhou China
5. Department of Obstetrics and Gynaecology Nanfang Hospital Southern Medical University Guangzhou China