1. Laboratory for Mechanical Systems Engineering (304), EMPA (Swiss Federal Laboratories for Materials Science and Technology) Dübendorf, Überlandstrasse 129, CH-8600 Dübendorf, Zürich 8600, Switzerland
2. Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI 53706 e-mail:
3. Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI 53706
4. Facultad de Ingeniería y Ciencias, Universidad Adolfo Ibáñez, Viña del Mar, Chile
5. VibeDx Diagnostic Corp., Edmonton, AB T5J4P6, Canada
6. Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI 53705
7. Department of Population Health Sciences, University of Wisconsin-Madison, Madison, WI 53706