1. a NUS Graduate School for Integrative Sciences and Engineering (NGS), National University of Singapore, Healthcare and Energy Materials Laboratory , Block E3, #05-11, 2 Engineering Drive 3, Singapore
2. b School of Materials Science and Engineering, Nanyang Technological University , Singapore
3. c Division of Bioengineering, National University of Singapore , Singapore
4. d Department of Orthopedic Surgery , National University Health System , Singapore
5. e Department of Mechanical Engineering , National University of Singapore , Singapore
6. f King Saud University , Riyadh , Saudi Arabia