1. Department of Dermatology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, P.R. China.
2. Tissue Bank, China-Japan Union Hospital of Jilin University, Changchun, Jilin, P.R. China.
3. Department of Orthopedics, China-Japan Union Hospital of Jilin University, Changchun, Jilin, P.R. China.