1. Institute of Human Virology; Zhongshan School of Medicine; Sun Yat-sen University; Guangzhou China
2. Key Laboratory of Tropical Diseases Control; Ministry of Education in China; Sun Yat-sen University; Guangzhou China
3. Key Laboratory for Major Obstetric Diseases of Guangdong Province; Third Affiliated Hospital of Guangzhou Medical University; Guangzhou China
4. Department of Biochemistry; Zhongshan School of Medicine; Sun Yat-sen University; Guangzhou China