1. Department of Health Sciences; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
2. Department of Pathology; Kitakyushu Municipal Medical Center; Kitakyushu Japan
3. Department of Obstetrics and Gynecology; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
4. Department of Anatomic Pathology; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan