[1] Natl Surg Adjuvant Breast & Bowel Project, Washington, DC USA
[2] MedStar Washington Hosp Ctr, Washington Canc Inst, Washington, DC USA
[3] NSABP Biostat Ctr, Pittsburgh, PA USA
[4] Univ Pittsburgh, Grad Sch Publ Hlth, Dept Biostat, Pittsburgh, PA 15261 USA
[5] Natl Surg Adjuvant Breast & Bowel Project, Dallas, TX USA
[6] Univ Texas SW Med Ctr Dallas, Dallas, TX 75390 USA
[7] Natl Surg Adjuvant Breast & Bowel Project, Pittsburgh, PA USA
[8] Univ Pittsburgh, Inst Canc, Pittsburgh, PA USA
[9] Natl Surg Adjuvant Breast & Bowel Project, Goldboro, NC USA
[10] SCCC CCOP, Goldboro, NC USA
[11] All Ireland Cooperat Oncol Res Grp, Galway, Ireland
[12] Univ Hosp Galway, Galway, Ireland
[13] Natl Surg Adjuvant Breast & Bowel Project, Vallejo, CA USA
[14] Kaiser Permanente Northern Calif, Vallejo, CA USA
[15] Natl Surg Adjuvant Breast & Bowel Project, Denver, CO USA
[16] Kaiser Permanente, Denver, CO USA
[17] Natl Surg Adjuvant Breast & Bowel Project, Montreal, PQ, Canada
[18] Ctr Hosp Univ Montreal, Montreal, PQ, Canada
[19] Natl Surg Breast & Bowel Project, San Diego, CA USA
[20] Kaiser Permanente Southern Calif, San Diego, CA USA
[21] Univ Pittsburgh, Magee Womens Hosp, Pittsburgh, PA 15213 USA
[22] Natl Surg Adjuvant Breast & Bowel Project, Newark, DE USA
[23] Christiana Care Hlth Syst, Helen F Graham Canc Ctr, Newark, DE USA
[24] Natl Surg Adjuvant Breast & Bowel Project, Winston Salem, NC USA
[25] Wake Forest Univ, Surg Oncol Serv, Winston Salem, NC 27109 USA
[26] Natl Surg Adjuvant Breast & Bowel Project, Baltimore, MD USA
[27] Medstar Franklin Sq Med Ctr, Baltimore, MD USA
[28] Natl Surg Adjuvant Breast & Bowel Project, Quebec City, PQ, Canada
[29] Hop St Sacrement, Ctr Hosp Affilie Univ Quebec, Quebec City, PQ, Canada
[30] Natl Surg Adjuvant Breast & Bowel Project, Jacksonville, FL USA
[31] Mayo Clin, Jacksonville, FL 32224 USA
[32] Natl Surg Adjuvant Breast & Bowel Project, Ctr Biostat, Pittsburgh, PA USA
[33] Natl Surg Adjuvant Breast & Bowel Project, Canton, OH USA
[34] Aultman Hosp, Canton, OH USA
[35] Allegheny Gen Hosp, Allegheny Canc Ctr, Pittsburgh, PA 15212 USA