[1] NCI, Rockville, MD USA
[2] NCI, SAIC Frederick Inc, Frederick, MD 21701 USA
[3] Nationwide Childrens Hosp, Columbus, OH USA
[4] Albert Einstein Coll Med, Bronx, NY 10467 USA
[5] NCI, CCR, Bethesda, MD 20892 USA
[6] UCL Canc Inst, Manchester, NH USA
[7] Royal Natl Orthopaed Hosp NHS Trust, Manchester, Lancs, England
[8] Univ Toronto, Toronto, ON, Canada
[9] Univ De Navarra, Pamplona, Spain
[10] AY Ankara Oncol Training & Res Hosp, Ankara, Turkey
[11] Orthopaed Rizzoli Inst, Bologna, Italy
[12] Univ Minnesota, Minneapolis, MN USA
[13] Univ So Calif, Keck Sch Med, Los Angeles, CA 90033 USA
[14] Stanford Univ, Palo Alto, CA 94304 USA
[15] Lucile Packard Childrens Hosp, Palo Alto, CA USA
[16] GRAACC UNIFESP, Sao Paulo, Brazil
[17] Univ Melbourne, Melbourne, Vic, Australia
[18] Harvard Univ, Sch Publ Hlth, Boston, MA 02115 USA
[19] Ctr Nacl Invest Oncol, Madrid, Spain
[20] Ctr Res Environm Epidemiol, Barcelona, Spain