[1] Inst Gustave Roussy, Villejuif, France
[2] Vrije Univ Amsterdam, Med Ctr, Amsterdam, Netherlands
[3] Vall dHebron Univ Hosp, Barcelona, Spain
[4] Osped Niguarda Ca Granda, Milan, Italy
[5] Christie Hosp NHS Trust, Manchester M20 4BX, Lancs, England
[6] Assistance Publ Hop Marseille, Marseille, France
[7] NCI, Bethesda, MD 20892 USA