G Jo1, J S Park1, D-A Yu1, J Ohn1,2, S L Sheu3, J-H Mun1,2. 1. Department of Dermatology, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, 110-744, Seoul, Republic of Korea. 2. Institute of Human-Environment Interface Biology, Seoul National University, Seoul, Republic of Korea. 3. Department of Dermatology, Stanford University, Stanford, CA, U.S.A.