1. Department of Radiology, College of Medicine, Inje University Busan Paik Hospital, Busan 47392, Korea.
2. Department of Radiology, College of Medicine, Soonchunhyang University Bucheon Hospital, Bucheon 14584, Korea.
3. Department of Radiology, Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital, Seoul 03181, Korea.
4. Department of Radiology, Dongcheon Dongkang Hospital, Ulsan 44495, Korea.
5. Department of Radiology, Daegu Fatima Hospital, Daegu 41199, Korea.
6. Department of Pathology, College of Medicine, Inje University Busan Paik Hospital, Busan 47392, Korea.