[1] Univ Hosp, Gerhard Domagk Inst Pathol, Munster, Germany
[2] Netherlands Canc Inst, Dept Radiotherapy, Plesmanlaan 121, NL-1066 CX Amsterdam, Netherlands
[3] Leiden Univ, Med Ctr, Dept Pathol, Leiden, Netherlands
[4] Gustave Roussy, Dept Med Biol & Pathol, Villejuif, France
[5] Univ Texas MD Anderson Canc Ctr, Dept Pathol, Houston, TX 77030 USA
[6] Royal Marsden Hosp, Dept Radiol, London SW3 6JJ, England
[7] Inst Gustave Roussy, Dept Radiotherapy, Paris, France
[8] Ctr Georges Francois Leclerc, Dept Pathol, Dijon, France
[9] Royal Marsden Hosp, Sarcoma Unit, London SW3 6JJ, England
[10] Heidelberg Univ, Inst Pathol, Bergheimer Str 58, D-69115 Heidelberg, Germany
[11] Gen Hosp Treviso, Dept Oncol & Anat Pathol, Treviso, Italy
[12] Fdn IRCCS Ist Nazl Tumori, Dept Med Oncol, Milan, Italy
[13] Royal Marsden Hosp, Dept Med Oncol, London SW3 6JJ, England
[14] Fdn IRCCS Ist Nazl Tumori, Dept Surg, Milan, Italy
[15] Inst Curie, Dept Surg, Paris, France