1. National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, P. R. China
2. Chengdu NewMed Biotechnology Co., Ltd, Chengdu 611139, P. R. China
3. Institute of Regulatory Science for Medical Device, Sichuan University, Chengdu, Sichuan Province, 610065, P. R. China