[1] Univ Minnesota, Dept Pediat, Minneapolis, MN 55455 USA
[2] Mayo Clin Arizona, Dept Hematol Oncol, Phoenix, AZ 85054 USA
[3] Univ Kansas, Dept Med, Westwood, KS 66205 USA
[4] Northwestern Med Lake Forest Hosp, Lurie Canc Ctr Affiliate Network, Dept Hematol Oncol, Lake Forest, IL 60045 USA
[5] Univ Texas Southwestern Med Ctr Dallas, Dept Med, Dallas, TX 75390 USA
[6] St Jude Childrens Res Hosp, Dept Epidemiol & Canc Control, Memphis, TN 38105 USA
[7] Univ Colorado, Childrens Hosp Colorado, Dept Pathol & Lab Med, Anschutz Med Campus, Aurora, CO 80045 USA
[8] Univ Colorado, Dept Pathol, Anschutz Med Campus, Aurora, CO 80045 USA
[9] Nationwide Childrens Hosp, Dept Pathol & Lab Med, Columbus, OH 43205 USA
[10] Mem Sloan Kettering Canc Ctr, Dept Epidemiol & Biostat, New York, NY 10017 USA
[11] Univ Chicago, Dept Pediat, Chicago, IL 60637 USA
[12] Univ Chicago, Dept Med, Chicago, IL 60637 USA
[13] Duke Univ, Dept Med, Durham, NC 27705 USA
[14] Univ Minnesota, Dept Med, Minneapolis, MN 55455 USA