1. Department of Diagnostic Radiology, Chosun University Medical College, Korea.
2. Department of Diagnostic Radiology, Goshin University Medical College, Korea.
3. Department of Diagnostic Radiology, Inha University Medical College, Korea.
4. Department of Diagnostic Radiology, Chonnam University Medical College, Korea.
5. Department of Diagnostic Radiology, Gyonghee University Medical College, Korea.
6. Department of Diagnostic Radiology, Ulsan University Medical College, Korea.
7. S & G Biotech, Inc., Korea.