1. Department of Dermatology; Chung-Ang University College of Medicine; Seoul South Korea
2. Department of Dermatology; Myongji Hospital; Seonam University College of Medicine; Goyang Korea
3. Department of Medicine; Graduate School; Chung-Ang University; Seoul Korea
4. Department of Dermatology; Seoul Paik Hospital; Inje University College of Medicine; Seoul Korea
5. Department of Dermatology; College of Medicine; Catholic Kwandong University; International St. Mary's Hospital; Incheon Korea
6. Classys Inc.; Seoul Korea