DeMets David L, Ellenberg Susan S
From the Department of Biostatistics and Medical Informatics, University of Wisconsin-Madison, Madison (D.L.D.); and the Department of Biostatistics and Epidemiology, University of Pennsylvania Perelman School of Medicine, Philadelphia (S.S.E.).
N Engl J Med. 2016 Oct 6;375(14):1365-1371. doi: 10.1056/NEJMra1510066.