Seo Hyung Lee1, Yu Jin Kim2. 1. Gacheon University Gil Medical Center, Department of Plastic and Reconstructive Surgery, 21 Namdong-daero 774beon-gil, Namdong-gu, Incheon 405-760, Republic of Korea. 2. Gacheon University Gil Medical Center, Department of Plastic and Reconstructive Surgery, 21 Namdong-daero 774beon-gil, Namdong-gu, Incheon 405-760, Republic of Korea. Electronic address: pseugene@gilhospital.com.