1. University of Virginia Health System, Charlottesville, VA, USA
2. White River Health System, Batesville, AZ, USA
3. OSF St Francis Medical Center, Peora, IL, USA
4. University of Pittsburgh Medical Center, Pittsburg, PA, USA
5. Indiana University, Indianapolis, IN, USA
6. University of Washington, Seattle, WA, USA
7. Karolinska Institutet, Stockholm, Sweden
8. Heartland Regional Medical Center, Marion, IL, USA
9. Beaumont Medical Center, Royal Oak, MI, USA