1. Department of Dermatology, Samsung Medical Center; Sungkyunkwan University School of Medicine; Seoul South Korea
2. Department of Pathology, Samsung Medical Center; Sungkyunkwan University School of Medicine; Seoul South Korea
3. Department of Plastic Surgery, Samsung Medical Center; Sungkyunkwan University School of Medicine; Seoul South Korea
4. Department of Dermatology and Cutaneous Biology; Thomas Jefferson University Hospital; Philadelphia PA USA
5. Division of Dermatology; Loyola University Medical Center; Maywood IL USA