1. Shandong Clinical College of Skin Diseases; Anhui Medical University; Jinan PR China
2. Shandong Provincial Institute of Dermatology and Venereology; Shandong Provincial Academy of Medical Science; Jinan PR China
3. Shandong Provincial Hospital for Skin Diseases; Jinan PR China
4. Department of Dermatology; People's Hospital of Shouguang; Weifang PR China