1. Department
of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
2. Department
of Materials Engineering, Tatung University, Taipei 104, Taiwan
3. Department
of Orthopedic Surgery, National Taiwan University Hospital−Hsinchu Branch, Hsinchu 30013, Taiwan
4. Department
of Mechanical Engineering, National Taiwan University, Taipei 10617, Taiwan
5. Institute
of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan