1. Society to Improve Diagnosis in Medicine , 5 Hitching Post , Plymouth, MA 02360 , USA
2. Senior Fellow, RTI International , Plymouth, MA , USA
3. Minneapolis, MN , USA
4. Children’s Hospitals and Clinics of Minnesota , Minnetonka, MN , USA
5. Department of Medicine , University of Minnesota Medical School , Minneapolis, MN , USA
6. Department of Pediatrics , University of Minnesota Medical School , Minneapolis, MN , USA
7. Department of Pathology , Yale School of Medicine , New Haven, CT , USA