1. Department of Dermatology and Cutaneous Biology Research Center; International St. Mary's Hospital; Catholic Kwandong University College of Medicine; Incheon Korea
2. Kangskin Dermatology Clinic; Seoul Korea
3. Department of Anatomy; Soonchunhyang University College of Medicine; Cheonan Korea
4. Department of Dermatology; Yanbian University Hospital; Yanji China
5. Department of Dermatology and Cutaneous Biology Research Institute; Yonsei University College of Medicine; Seoul Korea