1. Department of Radiology Chung‐Ang University Hospital Chung‐Ang University College of Medicine Seoul Korea
2. Department of Radiology Kangbuk Samsung Hospital Sungkyunkwan University School of Medicine Seoul Korea
3. Department of Radiology GangNeung Asan Hospital University of Ulsan College of Medicine Gangneung Republic of Korea
4. Department of Radiology Human Medical Imaging and Intervention Center Seoul Republic of Korea
5. Department of Radiology New Korea Hospital Gimpo Korea
6. Division of Biostatistics Department of R&D Management Kangbuk Samsung Hospital Sungkyunkwan University School of Medicine Seoul Korea