1 Department of Radiology, Jeonbuk National University Hospital-Jeonbuk National University Medical School, Jeonju, Republic of Korea; Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Republic of Korea.
2 Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Republic of Korea; Department of Thoracic and Cardiovascular Surgery, Jeonbuk National University Hospital-Jeonbuk National University Medical School, Jeonju, Republic of Korea. Electronic address: kim77jh@gmail.com.