%0 Journal Article %T 21-Gene assay as predictor of chemotherapy benefit in HER2-negative breast cancer %A Charles E. Geyer %A Jr. %A D. Lawrence Wickerham %A Eleftherios P. Mamounas %A Frederick L. Baehner %A Gong Tang %A Joseph P. Costantino %A Michael Crager %A Norman Wolmark %A Priya Rastogi %A Soonmyung Paik %A Steven Shak %J Archive of "NPJ Breast Cancer". %D 2018 %R 10.1038/s41523-018-0090-6 %X CONSORT Diagram for 21-gene assay study using available primary breast cancer specimens from NSABP B-2 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6235896/