1. Department of Physics, Boise State University, Boise, ID 83725, USA
2. Biomolecular Sciences Graduate Program, Boise State University, Boise, ID 83725, USA
3. Department of Medical Physics and Biophysics, University of Split School of Medicine, 21000 Split, Croatia
4. Department of Biophysics, Medical College of Wisconsin, Milwaukee, WI 53226, USA