1. Department of Dermatology, Busan Paik Hospital, College of Medicine, Inje University, Busan, Korea.
2. Department of Dermatology, Haeundae Paik Hospital, College of Medicine, Inje University, Busan, Korea.
3. Department of Dermatology, Sanggye Paik Hospital, College of Medicine, Inje University, Seoul, Korea.
4. Department of Dermatology, Ilsan Paik Hospital, College of Medicine, Inje University, Goyang, Korea.