1. The Pennsylvania Muscle Institute, Department of Physiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
2. Center for Engineering Mechanobiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
3. Department of Biomedical Engineering, Pennsylvania State University, University Park, PA 16802
4. Department of Chemistry, Pennsylvania State University, University Park, PA 16802