1. Department of Radiology, Research Institute of Radiology Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
2. Department of Clinical Epidemiology and Biostatistics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
3. Division of Magnetic Resonance, Korea Basic Science Institute, Chungbuk, Republic of Korea
4. Sogang Center for Writing, Sogang University, Seoul, Republic of Korea