1. Memorial Sloan Kettering Cancer Center, New York, New York
2. Weill Cornell Medical College, New York, New York
3. St Jude Children's Research Hospital, Memphis, Tennessee
4. University of Alberta, Edmonton, Alberta, Canada
5. Fred Hutchinson Cancer Research Center, Seattle, Washington
6. The Hospital for Sick Children, Toronto, Ontario, Canada
7. City of Hope, Duarte, California
8. The Norwegian School of Sport Sciences, Oslo, Norway
9. Duke University Medical Center, Durham, North Carolina