1. Department of Dermatology, Severance Hospital, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea.
2. Department of Dermatology, Yongin Severance Hospital, Yongin, Korea.
3. Department of Dermatology, Yonsei University Wonju College of Medicine, Wonju, Korea.
4. Department of Dermatology, Gangnam Severance Hospital, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea.