1. Department of Medical ImagingUniversity of Toronto Toronto Canada
2. Department of RadiologyUniversity of Ottawa Ottawa Canada
3. Department of RadiologyColumbia University New York New York USA
4. Department of RadiologyUniversity of Pennsylvania Philadelphia Pennsylvania USA
5. Department of RadiologyNew York University New York New York USA
6. Department of RadiologyUniversity of Michigan Ann Arbor Michigan USA
7. Department of RadiologyStanford University Stanford California USA
8. Department of Radiology and Biomedical ImagingUniversity of California San Francisco California USA
9. Department of Radiology and Biomedical ImagingYale University New Haven Connecticut USA