1. Department of Dermatology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
2. Department of Dermatology, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
3. Department of Dermatology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea.
4. Department of Dermatology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
5. Department of Dermatology, Ewha Womans University College of Medicine, Seoul, Korea.
6. Department of Dermatology, Kyung Hee University College of Medicine, Seoul, Korea.
7. Department of Dermatology, Nowon Eulji Medical Center, Eulji University, Seoul, Korea.
8. Department of Dermatology, Yonsei University Wonju College of Medicine, Wonju, Korea.
9. Department of Dermatology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Korea.
10. Department of Dermatology, College of Medicine, Chosun University, Gwangju, Korea.
11. Department of Dermatology, National Medical Center, Seoul, Korea.
12. Department of Dermatology, Severance Hospital, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea.
13. Department of Dermatology, Chungnam National University College of Medicine, Daejeon, Korea.
14. Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea.
15. Department of Dermatology, Korea University College of Medicine, Seoul, Korea.
16. Department of Dermatology, Soonchunhyang University Bucheon Hospital, Bucheon, Korea.
17. Department of Dermatology, Gil Medical Center, Gachon University School of Medicine, Incheon, Korea.