1. Department of Dermatology; Seoul National University College of Medicine; Seoul Korea
2. Department of Dermatology; Dongtan Sacred Heart Hospital; Hallym University College of Medicine; Hwaseong Korea
3. Department of Oral Pathology; School of Dentistry and Dental Research Institute; Seoul National University; Seoul Korea
4. Department of Dermatology; National Medical Center; Seoul Korea
5. PHD Dermatology Clinic; Seoul Korea