1. Department of Obstetrics and Gynecology, Graduate School of Medicine, Nagoya University, Nagoya, Japan
2. Department of Healthcare Administration, Graduate School of Medicine, Nagoya University, Nagoya, Japan
3. Department of Obstetrics and Gynecology, Banbuntane Hotokukai, Fujita Health University, Fujita, Japan
4. Division of Tumor Biology, Graduate School of Medicine, Nagoya University, Nagoya, Japan