1. Department of Clinical Laboratory; Beijing Traditional Chinese Medicine Hospital Affiliated to Capital Medical University; Beijing P. R. China
2. Department of Clinical Laboratory; Hospital Affiliated to Academy of Military Medical Science; Beijing P. R. China
3. Department of Clinical Laboratory; Beijing Ditan Hospital Affiliated to Capital Medical University; Beijing P. R. China
4. Department of Dermatology; Beijing Traditional Chinese Medicine Hospital Affiliated to Capital Medical University; Beijing P. R. China
5. Department of Clinical Laboratory; Jingxi Hospital of General Hospital of Beijing Military Region; Beijing P. R. China
6. Department of Clinical Laboratory; Third Hospital of Peking University; Beijing P. R. China