1 Department of Surgery, Jeonbuk National University Medical School, Jeonju, South Korea; Research Institute of Clinical Medicine of Jeonbuk National University - Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea.
2 Department of Pediatrics, Jeonbuk National University Medical School, Jeonju, South Korea.
3 Department of Surgery, Jeonbuk National University Medical School, Jeonju, South Korea; Research Institute of Clinical Medicine of Jeonbuk National University - Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea. Electronic address: surgeon@jbnu.ac.kr.