1. Cancer Medicine, National Hospital Organization Kyoto Medical Centre, Kyoto 612-8555, Japan
2. Department of Medical R&D Promotion Project, Japan Agency for Medical Research and Development (AMED), Tokyo 103-0022, Japan
3. Department of Pathology, Shinshu University Hospital, Nagano 390-8621, Japan
4. Section of Assistant Director, Sendai Red Cross Hospital, Miyagi 982-8501, Japan
5. Department of Obstetrics and Gynecology, National Hospital Organization Kyoto Medical Centre, Kyoto 612-8555, Japan
6. Department of Obstetrics and Gynecology, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan