1. Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
2. Department of Obstetrics and Gynecology, University of Kinshasa, Kinshasa, D. R. Congo
3. Department of Clinical Immunology, Tongji Hospital, Tongji Medical College, Huazhong University of Sciences and Technology, Wuhan, People’s Republic of China
4. Department of Tropical Medicine Infectious and Parasitic Diseases, University of Kinshasa, Kinshasa, D. R. Congo