1. Department of Radiology, CHA Bundang Medical Center; CHA University; Seongnam-si Korea
2. Department of Internal Medicine; Yonsei University College of Medicine; Seoul Korea
3. Department of Radiology, Research Institute of Radiological Science; Yonsei University College of Medicine; Seoul Korea
4. Department of Radiology, Dongsan Medical Center; Keimyung University College of Medicine; Daegu Korea
5. Department of Radiology, Gangam Severance Hospital; Yonsei University College of Medicine; Seoul Korea