1. Department of Obstetrics and Gynecology; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
2. Division of Diagnostic Pathology; Kyushu University Hospital; Fukuoka Japan
3. Department of Anatomic Pathology; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
4. Department of Health Science; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan