1. Department of Radiology; Boston University; Boston Massachusetts USA
2. Department of Radiology; Tufts University; Medford Massachusetts USA
3. Department of Radiology; Ohio State University School of Medicine; Columbus Ohio USA
4. Department of Radiology; University of Washington; Seattle Washington USA
5. Hypnalgesics Inc; Brookline Massachusetts USA
6. School of Public Health; Boston University; Boston Massachusetts USA
7. Chair, Department of Radiation Oncology; University of Washington School of Medicine