1. University of North Carolina at Charlotte, Department of Physics and Optical Science, 9201 University City Boulevard, Charlotte, North Carolina 28223, United States
2. Carolinas Medical Center, McKay Department of Urology, 1023 Edgehill Road South, Charlotte, North Carolina 28207, United States
3. University of North Carolina at Charlotte, Department of Physics and Optical Science, 9201 University City Boulevard, Charlotte, North Carolina 28223, United StatesbCarolinas Medical Center, McKay Department of Urology, 1023 Edgehill Road South, Charlotte