1. Microwave Engineering & Imaging Laboratory,Division of Gastroenterology and Hepatology,Department of Medicine Mayo Clinic,Rochester,MN,USA
2. North Dakota State University,Department of Electrical and Computer Engineering,Fargo,ND,USA
3. University of Missouri-Kansas City,Division of Energy, Matter and Systems, School of Science and Engineering,Kansas City,MO,USA
4. University of Wisconsin-La Crosse,Department of Computer Science & Computer Engineering,La Crosse,WI,USA