1. Department of Radiology, Ilsan Paik Hospital, Inje University, School of Medicine, Gyeonggi-do 411-706, Korea.
2. Department of Pathology, Ilsan Paik Hospital, Inje University, School of Medicine, Gyeonggi-do 411-706, Korea.
3. Department of Obstetrics and Gynecology, Ilsan Paik Hospital, Inje University, School of Medicine, Gyeonggi-do 411-706, Korea.