1. Microwave Engineering and Imaging Laboratory (MEIL), Division of Gastroenterology and Hepatology, Mayo Clinic,Rochester,MN,USA
2. Mayo Clinic,Department of Radiology,Rochester,MN,USA
3. Mayo Clinic,Department of Medicine,Rochester,MN,USA
4. Gastroenterology Research, Division of Gastroenterology and Hepatology, Mayo Clinic,Rochester,MN,USA