1. Graduate School Air Force Medical University Xi'an P. R. China
2. Department of Dermatology Air Force Medical Center, PLA Beijing P. R. China
3. Graduate School Hebei North University Zhangjiakou P. R. China
4. Handan Second Hospital Handan P. R. China
5. Department of Allergy State Key Laboratory of Complex Severe and Rare Diseases Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College Beijing P. R. China
6. Department of Dermatology West China Hospital, Sichuan University Chengdu P. R. China