1. Department of Dermatology; Chung-Ang University College of Medicine; 102 Heukseokro, Dongjak-gu Seoul 156-755 Korea
2. Department of Medicine; Graduate School; Chung-Ang University; Seoul Korea
3. Department of Otorhinolaryngology-Head and Neck Surgery; Chung-Ang University College of Medicine; Seoul Korea
4. Department of Emergency Medicine; Chung-Ang University College of Medicine; Seoul Korea
5. Oracle Dermatology Clinic; Seoul South Korea