1. Department of Dermatology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Korea.
2. Department of Preventive Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Korea.
3. Department of Pharmacology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Korea.