1. Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea.
2. Department of Pathology, Chonnam National University Medical School, Gwangju, Korea.
3. Department of Plastic and Reconstructive Surgery, Chonnam National University Medical School, Gwangju, Korea.
4. Department of Preventive Medicine, Chonnam National University Medical School, Gwangju, Korea.