[1] Zhejiang Univ Sch Med Sir Run Run Shaw Hosp, Dept Dermatol & Venereol, Hangzhou, Peoples R China
[2] Zhejiang Prov Peoples Hosp, Peoples Hosp Hangzhou Med Coll, Dept Dermatol, Hangzhou, Peoples R China
[3] Zhejiang Univ Sch Med Sir Run Run Shaw Hosp, Dept Gastroenterol, Hangzhou, Peoples R China