1 Department of Dermatology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.
2 Department of Dermatology, Taipei City Hospital, Taipei, Taiwan; Department of Dermatology, National Yang Ming Chiao Tung University, Taipei, Taiwan.
3 Department of Dermatology, E-Da Cancer Hospital, I-Shou University, Kaohsiung, Taiwan; School of Medicine for International Students, College of Medicine, I-Shou University, Kaohsiung, Taiwan.
4 Department of Dermatology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan. Electronic address: chancc@ntu.edu.tw.