1. School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, Pennsylvania19104, United States
2. Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania19104, United States
3. Department of Orthopaedic Surgery, Tulane University School of Medicine, New Orleans, Louisiana70112, United States
4. Department of Mechanical Engineering, University of Delaware, Newark, Delaware 19716, United States
5. Department of Mechanical Engineering, Villanova University, Villanova, Pennsylvania 19085, United States