1. University of Tennessee at Memphis, Memphis, Tennessee
2. The Hospital for Sick Children, Toronto, Ontario, Canada
3. University of Colorado, Denver, Colorado
4. New York State Department of Health, Albany, New York
5. New York University, New York, New York
6. Schneider Childrens Hospital, New York, New York
7. University of Iowa Hospital, Iowa City, Iowa
8. University of Michigan, Ann Arbor, Michigan
9. University of Minnesota, Minneapolis, Minnesota
10. Cincinnati Childrens Hospital, Cincinnati, Ohio
11. University of Utah, Salt Lake City, Utah