1. Department of Orthopedic Surgery, Columbia University, New York, NY 10032, USA.
2. Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA.
3. NSF Science and Technology Center for Engineering Mechanobiology, Washington University, St. Louis, MO 63130, USA.
4. Missouri University of Science and Technology, Rolla, MO 65409, USA.
5. Institute of Lightweight Design and Structural Biomechanics, Vienna University of Technology, Vienna, Austria.