1. Department of Molecular Cancer Science, Yamagata University School of Medicine, Yamagata 990-9585, Japan
2. Department of Clinical Oncology, Yamagata University School of Medicine, Yamagata 990-9585, Japan
3. Department of Obstetrics and Gynecology, Yamagata University School of Medicine, Yamagata 990-9585, Japan
4. Department of Ophthalmology, Yamagata University School of Medicine, Yamagata 990-9585, Japan
5. Research Institute for Promotion of Medical Sciences, Yamagata University Faculty of Medicine, Yamagata 990-9585, Japan