1 Department of Dermatology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea; Cutaneous Biology Research Institute, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
2 Department of Dermatology, College of Medicine, Catholic University of Korea, Seoul, Korea.
3 Department of Internal Medicine and Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea.
4 Department of Dermatology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea; Cutaneous Biology Research Institute, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea. Electronic address: kwanglee@yuhs.ac.