1. Department of Dermatovenereology; West China Hospital; Sichuan University; Chengdu China
2. Department of Dermatology & Rheumatology; The Second Affiliated Hospital of Kunming Medical University; Kunming China
3. Department of Pathology; West China Hospital; Sichuan University; Chengdu China
4. State Key Laboratory of Oral Diseases; West China Hospital of Stomatology; Sichuan University; Chengdu China