1. Department of Dermatology; Daping Hospital; The Third Military Medical University; Chongqing 400042 China
2. Department of Microbiology and Biochemical Pharmacy; National Engineering Research Center of Immunological Products; College of Pharmacy; The Third Military Medical University; Chongqing 400038 China
3. Department of Gastroenterology; Daping Hospital; The Third Military Medical University; Chongqing 400042 China