Kun-Yong Sung1, Seungkoo Lee2, Yeonjin Jeong3, Sang-Yeul Lee3. 1. Department of Plastic and Reconstructive Surgery, Kangwon National University School of Medicine, Chuncheon, Korea. 2. Department of Anatomic Pathology, Kangwon National University School of Medicine, Chuncheon, Korea. 3. Department of Plastic and Reconstructive Surgery, Kangwon National University Hospital, Chuncheon, Korea.