1. Department of Dermatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.
2. Institute of Psoriasis, Tongji University School of Medicine, Shanghai, China.
3. Department of Dermatology, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
4. Department of Hematology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.
5. Department of Pathology, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, China.