1. Department of Dermatology, Chungnam National University Sejong Hospital, Sejong, Republic of Korea
2. Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
3. Department of Dermatology, Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong, Republic of Korea