1 Department of Dermatology, Seoul National University College of Medicine, Seoul, Korea; Institute of Human-Environment Interface Biology, Seoul National University, Seoul, Korea; Department of Dermatology, Seoul National University Boramae Hospital, Seoul, Korea.
2 Department of Dermatology, Seoul National University College of Medicine, Seoul, Korea; Institute of Human-Environment Interface Biology, Seoul National University, Seoul, Korea.
3 Department of Dermatology, Seoul National University College of Medicine, Seoul, Korea; Institute of Human-Environment Interface Biology, Seoul National University, Seoul, Korea; Institute on Aging, Seoul National University, Seoul, Korea. Electronic address: jhchung@snu.ac.kr.