1. Department
of Advanced Interdisciplinary Studies, Institute of Basic Medical Sciences and Tissue
Engineering Research Center, Academy of Military Medical Sciences, No. 27, Taiping Road, Beijing 100850, China
2. Department of Stomatology, Affiliated Hospital of Academy of Military Medical Sciences, Beijing 100071, China
3. Department of Polymer
Science and Key Laboratory of Systems Bioengineering of Ministry of
Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
4. Department of Chemistry and Biochemistry, University of Texas at Austin, 2500 Speedway, Austin, Texas 78712, United States