1. Department of Plastic and Reconstructive Surgery, Kyungpook National University Chilgok Hospital, School of Medicine, Kyungpook National University, Daegu, Korea.
2. Department of Surgery, Kyungpook National University Chilgok Hospital, School of Medicine, Kyungpook National University, Daegu, Korea.
3. Department of Surgery, Seoul National University Bundang Hospital, School of Medicine, Seoul National University, Seoul, Korea.