In Memoriam: Burton E. Sobel A Tribute from Family, Friends and Colleagues October 21, 1937 – May 3, 2013. (October 2013) - Schneider, David J; Avera, Elizabeth Sobel; Bergmann, Steven R; Braunwald, Eugene; Collen, Désiré; Frye, Robert; Jaffe, Allan; Kirk, RJ; Ludbrook, Philip A; Roberts, Robert; Spector, Peter; Vlasuk, George P; et al.