1. Department of Dermatology, Huashan Hospital, Fudan University, Shanghai Institute of Dermatology, Shanghai, PR China
2. Department of Transfusion Medicine, Huashan Hospital, Fudan University, Shanghai, China
3. Department of Laboratory Medicine, Huashan Hospital, Fudan University, Shanghai, China
4. Department of Dermatology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland