1. Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
2. Bioengineering Program, College of Engineering and Mathematical Sciences, and Larner College of Medicine, University of Vermont, Burlington, Vermont 05405, United States
3. Department of Mechanical Engineering, College of Engineering and Mathematical Sciences, University of Vermont, Burlington, Vermont 05405, United States
4. Department of Electrical and Biomedical Engineering, College of Engineering and Mathematical Sciences, University of Vermont, Burlington, Vermont 05405, United States
5. Department of Orthopaedics and Rehabilitation, Larner College of Medicine, University of Vermont, Burlington, Vermont 05405, United States