1. Department of Dermatology and Dermatologic Surgery, Shanghai Ninth People's Hospital affiliated to Shanghai Jiaotong University School of Medicine
2. Shanghai 200011
3. P. R. China
4. National Engineering Laboratory for Modern Silk & Collaborative Innovation Center of Suzhou Nano Science, Soochow University
5. Suzhou 215123
6. Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital affiliated to Shanghai Jiaotong University School of Medicine
7. Department of Biomedical Engineering, Tufts University
8. Medford
9. USA