Tse-Yuan Liaw1, Chung-Hsing Chang2. 1. Department of Dermatology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Department of Dermatology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan. 2. Department of Dermatology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Department of Dermatology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Graduate Institute of Medicine, School of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan. Electronic address: 970457@mail.kmuh.org.tw.