1. Royal Victoria Regional Health Center, Barrie, Ontario; University of Ottawa, Ottawa Hospital Research Institute; Ottawa Canada
2. Department of Radiology; Montefiore Medical Center; Bronx New York USA
3. Department of Radiology, Duke University Medical Center, Durham, North Carolina, USA, Center for Advanced Magnetic Resonance Development, Duke University Medical Center, Durham, North Carolina, USA, Department of Radiology, Memorial Sloan Kettering Cancer Center; New York New York USA
4. Department of Radiology; Memorial Sloan Kettering Cancer Center; New York New York USA
5. Department of Radiology; Washington University School of Medicine; St. Louis, Missouri USA
6. Department of Radiology; Thomas Jefferson University; Philadelphia Pennsylvania USA
7. Department of Radiology; Centre Hospitalier de l'Université de Montréal (CHUM); Montréal Québec Canada
8. Department of Radiology; MD Anderson Cancer Center; Huston Texas USA
9. Department of Radiology; University of California; San Diego California USA
10. Department of Radiology; Stanford University; Palo Alto California USA
11. Department of gastroenterology; University of California; San Diego California USA