N Engl J Med 2015 Sep;373(11):1040-7
From the Division of Hematology-Oncology, Department of Medicine (A.L.G., M.V.M., D.T.V., A.D.C., B.M.W., E.A.S.), Department of Biostatistics and Epidemiology (W.-T.H.), Department of Pathology and Laboratory Medicine (S.F.L., Y.D.M., J.J.M., Z.Z., A.B., B.L.L., C.H.J.), and Abramson Cancer Center (A.L.G., M.V.M., W.-T.H., S.F.L., Y.D.M., J.J.M., Z.Z., D.T.V., A.D.C., B.M.W., K.D., N.D.S.K., A.B., B.L.L., C.H.J., E.A.S.), Perelman School of Medicine, University of Pennsylvania, Philadelphia.