1. Jan P. Deroose, Alexander M.M. Eggermont, Albertus N. van Geel, Jacobus W.A. Burger, Michael A. den Bakker, Johannes H.W. de Wilt, and Cornelius Verhoef, Daniel den Hoed Cancer Center—Erasmus MC, Rotterdam, the Netherlands; and Alexander M.M. Eggermont, Institut de Cancérologie Gustave Roussy, Villejuif-Paris, France.