1. From the Breast Cancer Now Toby Robins Research Centre, the Institute of Cancer Research (A.N.J.T.), and the Breast Cancer Now Unit, Guy’s Hospital Cancer Centre, King’s College London (A.N.J.T.), London, AstraZeneca, Cambridge (S.J.H., N.B.), and Frontier Science (Scotland), Kincraig (R.M.C., E.M.F., C.C.) — all in the United Kingdom; Dana–Farber Cancer Institute, Harvard Medical School (J.E.G., R.D.G.), Frontier Science Foundation (R.D.G.), and Harvard T.H. Chan School of Public Health (R.D.G.) — all...