1. University of Washington School of Medicine, Department of Radiation Oncology; Seattle Washington USA
2. University of Washington School of Medicine, Department of Radiology; Seattle Washington USA
3. Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology, Department of Radiology; Wuhan Hubei P.R. China
4. Ohio State University, Department of Radiology; Columbus Ohio USA
5. Louisiana State University, Department of Physics; Baton Rouge Louisiana USA
6. East Carolina University, Department of Radiation Oncology; Greenville North Carolina USA
7. MIM Software, Inc; Cleveland Ohio USA