1. Department of Anatomy, Chonbuk National University Medical School, Jeonju, Korea.
2. Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, Jilin, China.
3. Division of Internal Medicine, Iwamizawa Asuka Hospital, Iwamizawa, Japan.
4. Department of Surgery, Chonbuk National University Hospital, Jeonju, Korea.
5. Research Institute of Clinical Medicine, Chonbuk National University-Biomedical Research Institute, Chonbuk National University Hospital, Jeonju, Korea.