1. Sacred Heart Children's Hospital; Spokane Washington
2. University of Texas Southwestern; Dallas Texas
3. Primary Children's Medical Center; Salt Lake City Utah
4. Dr. von Hauner Childrens Hospital; Munich Germany
5. University of Texas Health Science Center at San Antonio; San Antonio Texas
6. Vanderbilt University School of Medicine and the Monroe Carell Jr. Children's Hospital at Vanderbilt; Nashville TN
7. Children's Hospital of Wisconsin; Milwaukee Wisconsin
8. University of Southern California; Los Angeles California
9. Children's Hospital & Research Center Oakland; Oakland California