1. Department of Burns and Plastic Surgery, The Affiliated Hospital of Jiangnan University, Wuxi 214041, China
2. College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
3. National Engineering Laboratory for Modern Silk & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
4. Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States