1. Department of Dermatology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, P.R. China
2. Shanghai Institute of Dermatology and Department of Dermatology, Huashan Hospital, Fudan University, Shanghai 200040, P.R. China
3. Department of Dermatology, Changhai Hospital, Second Military Medical University, Shanghai 200433, P.R. China
4. Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Affiliated with Shanghai University of Traditional Chinese Medicine, Shanghai 200437, P.R. China