1. Department of Dermatology, College of Medicine Korea University 145, Anam‐ro, Seongbuk‐gu Seoul 02831 Republic of Korea
2. Department of Dermatology Korea University Ansan Hospital 123, Jeokgeum‐ro, Danwon‐gu Ansan‐si Gyeonggi‐do 15355 Republic of Korea
3. Barabom Dermatologic Clinic 153, Wiryedong‐ro, Sujeong‐gu Seongnam‐si Gyeonggi‐do 13642 Republic of Korea