[1] Hop Paul Brousse, Dept Oncol, Villejuif, France
[2] Ctr Hosp Reg Univ Trousseau, Tours, France
[3] Franche Comte Univ Hosp, Inst Reg Canc, Besancon, France
[4] Ctr Leon Berard, F-69373 Lyon, France
[5] Clin Porte St Cloud, Boulogne Billancourt, France
[6] Roche, Boulogne Billancourt, France
[7] Inst J Paoli I Calmettes, F-13009 Marseille, France