1. Department of Biomedical Engineering, University of Connecticut, Farmington, CT 06030, USA
2. Department of Molecular, Cellular & Biomedical Sciences, The City College of New York, New York, NY, 10031, USA
3. Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, Lincoln, NE, 68588, USA
4. Department of Biosystems and Soft Matter, Institute of Fundamental Technological Research, Polish Academy of Sciences, Warsaw 02-106, Poland