1. Department of Obstetrics & Gynecology, Fukuoka University, Fukuoka, Japan
2. Department of Biochemistry, Fukuoka University, Fukuoka, Japan
3. Central Research Institute for Advanced Molecular Medicine, Fukuoka University, Fukuoka, Japan
4. Department of Microbiology & Immunology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
5. Department of Obstetrics & Gynecology, National Hospital Organization Saga National Hospital, Saga, Japan
6. Center for Maternal, Foetal & Neonatal Medicine, Fukuoka University Hospital, Fukuoka, Japan
7. Departemnt of Pediatrics, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
8. Department of Bacteriology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
9. Department of Maternal-Fetal Biology, National Research Institute for Child Health & Development, Tokyo, Japan
10. Department of Pathology, Fukuoka University School of Medicine & Hospital, Fukuoka, Japan