[1] Inst Gustave Roussy, Villejuif, France
[2] Fdn Ist Ricovero & Cura Carattere Sci Policlin S, Pavia, Italy
[3] Queen Mary Univ London, Barts Canc Inst, Barts Expt Canc Med Ctr, London, England
[4] Cambridge Univ Hlth Partners, Cambridge, England
[5] San Camillo Forlanini Hosp, Rome, Italy
[6] GlaxoSmithKline, Uxbridge, Middx, England
[7] Northwestern Univ, Feinberg Sch Med, Chicago, IL 60611 USA