1. Department of Emergency Medicine; University of Washington; Seattle WA
2. Department of Emergency Medicine; Brown University; Providence RI
3. Department of Diagnostic Imaging; Brown University; Providence RI
4. Department of Radiology; Mayo Clinic; Rochester MN
5. Patient representative
6. Department of Emergency Medicine; Michigan State University; Grand Rapids MI
7. Department of Emergency Medicine; Mayo Clinic; Rochester MN
8. Knowledge and Evaluation Research Unit; Division of Healthcare Policy Research; Department of Health Services Research; Robert D. and Patricia E. Kern Center for the Science of Healthcare Delivery; Mayo Clinic; Rochester MN
9. Department of Radiology and Imaging Sciences; Emory University School of Medicine; Atlanta GA
10. Department of Dermatology; Laboratory Medicine & Pathology; Mayo Clinic; Rochester MN