1. Frontier Institute of Science and Technology; Xi'an Jiaotong University; Xi'an China
2. State Key Laboratory for Manufacturing Systems Engineering; Xi'an Jiaotong University; Xi'an China
3. National Engineering Research Center for Tissue Restoration and Reconstruction; Guangzhou; China
4. College of Sciences; Xi'an University of Technology; Xi'an China
5. Department of Biologic and Materials Sciences; University of Michigan; Ann Arbor USA
6. Department of Biomedical Engineering; University of Michigan; Ann Arbor USA