[1] NCI, Bethesda, MD 20892 USA
[2] Fronfier Sci, Kincraig, England
[3] Univ Libre Bruxelles, Inst Jules Bordet, Brussels, Belgium
[4] Mayo Clin, Jacksonville, FL 32224 USA
[5] Univ Pittsburgh, Med Ctr, Pittsburgh, PA USA
[6] Inst Gustave Roussy, Villejuif, France
[7] Univ Helsinki, Cent Hosp, Dept Oncol, Helsinki, Finland
[8] Mayo Clin, Rochester, MN USA
[9] Univ Pittsburgh, Grad Sch Publ Hlth, Natl Surg Adjuvant Breast & Bowel Project, Biostat Ctr, Pittsburgh, PA USA
[10] Univ Pittsburgh, Grad Sch Publ Hlth, Dept Biostat, Pittsburgh, PA USA
[11] Inst Cancerol Gustave Roussy, Villejuif, France
[12] Breast Int Grp, Inst Jules Bordet, Brussels, Belgium
[13] Frontier Sci Scotland, Kingussie, Inverness, Scotland
[14] Dana Farber Canc Inst, Dept Biostat & Computat Biol, Boston, MA 02115 USA