1. Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea.
2. Department of Dermatology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
3. Department of Dermatology, Seoul National University College of Medicine, Seoul, Korea.
4. Institute of Dermatological Science, Medical Research Center, Seoul National University, Seoul, Korea.
5. Laboratory of Cutaneous Aging Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea.
6. Department of Bio-Medical Laboratory Science, Eulji Medi-Bio Research Institute, Eulji University, Seongnam, Korea.