1. Department of Dermatology; Eulji General Hospital; Eulji University; Seoul Korea
2. Division of Endocrinology and Metabolism; Department of Internal Medicine, St Vincent's Hospital; College of Medicine; The Catholic University of Korea; Suwon Korea
3. Department of Dermatology; Bucheon St Mary's Hospital; College of Medicine; The Catholic University of Korea; Suwon Korea
4. Department of Dermatology, St Vincent's Hospital; College of Medicine; The Catholic University of Korea; Suwon Korea