1. Key Laboratory for Biomechanics and Mechanobiology of Ministry of EducationSchool of Biological Science and Medical Engineering, Beihang University Beijing 100083 China
2. State Key Laboratory of Powder MetallurgyCentral South University Changsha 410083 China
3. Beijing Advanced Innovation Center for Biomedical EngineeringBeihang University Beijing 100083 China
4. Centre for Medical Engineering ResearchSchool of Mechanical and Manufacturing Engineering, Dublin City University Stokes Building, Collins Avenue, Dublin 9 Ireland