Kim BW1, Moon IJ1, Yun WJ1, Chung BY2, Kim SD3, Lee GY4, Chang SE1. Author information 1Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. 2Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea. 3Bright and Clear Dermatology Clinic, Seoul, Korea. 4Department of Dermatology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.