[1] Inha University College of Medicine,Department of Radiology, Inha University Hospital
[2] Hallym University College of Medicine,Department of Radiology, Kangdong Seong
[3] Korea University College of Medicine,Sim Hospital
[4] Gachon University College of Medicine,Department of Radiology, Korea University Guro Hospital
[5] Hanyang University College of Medicine,Department of Radiology, Gachon University Gil Hospital
[6] Hallym University College of Medicine,Department of Radiology, Hanyang University Hospital