[1
]Department of Radiology and Research Institute of Radiology, University of Ulsan College
of Medicine, Asan Medical Center, Seoul 138-736, Korea.
[2
]Department of Radiology, Human Medical Imaging & Intervention Center, Seoul 137-902,
Korea.
[3
]Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic
University of Korea, Seoul 137-701, Korea.
[4
]Department of Radiology, Seoul National University College of Medicine, Seoul 110-744,
Korea.
[5
]Department of Radiology and Thyroid Center, Daerim St. Mary's Hospital, Seoul 150-070,
Korea.
[6
]Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan
University School of Medicine, Seoul 135-710, Korea.
[7
]Department of Radiology, Yonsei Univsersity College of Medicine, Seoul 120-752, Korea.
[8
]Department of Radiology, Dong-A University Medical Center, Busan 602-713, Korea.
[9
]Department of Radiology, Busan Paik Hospital, Inje University College of Medicine,
Busan 633-165, Korea.
[10
]Department of Radiology, Hanyang University College of Medicine, Hanyang University
Hospital, Seoul 133-792, Korea.
[11
]Department of Radiology, Haeundae Healings Hospital, Busan 613-101, Korea.
[12
]Department of Radiology, Ansan Hospital, Korea University Medical College, Ansan 425-707,
Korea.
[13
]Department of Radiology and Thyroid Center, Chung-Ang University Hospital, Chung-Ang
University College of Medicine, Seoul 156-755, Korea.
[14
]Department of Radiology, Mothers' Clinic, Seongnam 463-821, Korea.
[15
]Department of Radiology, CHA University College of Medicine, Gangnam CHA Hospital,
Seoul 135-081, Korea.
[16
]Department of Radiology, Ajou University School of Medicine, Suwon 443-721, Korea.
[17
]Department of Radiology, UNMEC Clinic, Daegu 704-910, Korea.
[18
]Department of Radiology, Dr. Han's Breast Clinic, Seoul 135-892, Korea.
[19
]Department of Radiology, Myung Jindan Health Care Center, Seoul 157-927, Korea.
[20
]Department of Radiology, Thyroid Clinic, Philip Medical Center, Seoul 150-042, Korea.
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