[1] Cent South Univ, Xiangya Hosp, Dept Dermatol, 87 Xiangya Rd, Changsha 410008, Peoples R China
[2] Skin Hlth & Dis, Hunan Engn Res Ctr, Hunan Key Lab Skin Canc & Psoriasis, Changsha, Peoples R China
[3] Xiangya Hosp, Natl Clin Res Ctr Geriatr Disorders, Changsha, Peoples R China
[4] Cent South Univ, Xiangya Sch Publ Hlth, Dept Social Med & Hlth Management, Changsha, Peoples R China