1. Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea.
2. Biomedical Research Institute, Pusan National University Hospital, Busan, Korea.
3. Department of Dermatology, Pusan National University Yangsan Hospital, Yangsan, Korea.
4. Department of Dermatology, School of Medicine, Kyungpook National University, Daegu, Korea.