1. Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
2. Department of Dermatology, Hanynag University College of Medicine, Seoul, Korea.
3. Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea.
4. Department of Dermatology, Korea University College of Medicine, Seoul, Korea.
5. Department of Dermatology, Kyung Hee University School of Medicine, Seoul, Korea.
6. Department of Dermatology, Kangbuk Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
7. Department of Dermatology, Yonsei University College of Medicine, Seoul, Korea.
8. Department of Dermatology, Inje University Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea.
9. Department of Dermatology, Dankook University College of Medicine, Cheonan, Korea.