1. Department of Dermatology; Asan Medical Center; University of Ulsan College of Medicine; Seoul Korea
2. Department of Dermatology; Gangnam Severance Hospital; Yonsei University College of Medicine; Seoul Korea
3. Department of Dermatology; Seoul National University Bundang Hospital; Gyeonggi-do Korea
4. Department of Dermatology; Hanyang University College of Medicine; Seoul Korea
5. Department of Dermatology; Samsung Medical Center; Sungkyunkwan University School of Medicine; Seoul Korea