1 Department of Dermatology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing.
2 Department of Pathology, Health Science Center, Peking University, Beijing.
3 Department of Radiology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China.
4 Department of Pathology, Yale University School of Medicine, New Haven, Connecticut.
5 Department of Hematology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing.
6 Department of Pathology, Sanbo Brain Hospital, Capital Medical University, Beijing.
7 Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Henan.
8 Department of Dermatology, Capital Institute of Pediatrics, Peking University Teaching Hospital, Beijing.
9 Department of Dermatology, Hunan Children's Hospital, Hunan.
10 Department of Pathology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China. Electronic address: fulibing001@163.com.
11 Department of Dermatology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing. Electronic address: bch_maleen@sina.com.