[1] Seventh Peoples Hosp Shenyang, Dept Dermatol, Shenyang, Peoples R China
[2] China Med Univ, Dept Dermatol, Hosp 1, Shenyang, Liaoning, Peoples R China
[3] Blood Ctr Liaoning Prov, Shenyang, Liaoning, Peoples R China
[4] Shenyang Inst Food & Drug Control, Shenyang, Liaoning, Peoples R China