1. Department of Dermatology, Seoul National University College of Medicine, Seoul, Korea.
2. Department of Dermatology, Guro Hospital, Korea University College of Medicine, Seoul, Korea.
3. Department of Dermatology, Severance Hospital, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea.
4. Department of Dermatology, College of Medicine, Kyung Hee University, Seoul, Korea.
5. Department of Dermatology, Hanyang University College of Medicine, Seoul, Korea.
6. Department of Dermatology, Soonchunhyang University Hospital, Seoul, Korea.
7. Department of Dermatology, Pusan National University School of Medicine, Busan, Korea.
8. Department of Dermatology, Ajou University School of Medicine, Suwon, Korea.
9. Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea.