1. Vanderbilt University Medical Center, Nashville, Tennessee;
2. Rush University Medical Center, Chicago, Illinois;
3. Emory University School of Medicine, Atlanta, Georgia;
4. University of Western Australia, Perth;
5. Northwestern University Feinberg School of Medicine, Chicago, Illinois;
6. Centers for Disease Control and Prevention, Atlanta, Georgia;
7. University of Tennessee Health Science Center/Saint Thomas Health, Nashville;
8. John H. Stroger, Jr Hospital of Cook County, Chicago, Illinois; and
9. University of Utah School of Medicine, Salt Lake City